Actual sales data $($in pounds$)$ for roasted coffee beans at a grocery store are given in the table below:

$\begin{array}{cc}\text{W}\text{e}\text{e}\text{k}& \text{A}\text{c}\text{t}\text{u}\text{a}\text{l}\text{S}\text{a}\text{l}\text{e}\text{s}\\ 1& 180\\ 2& 201\\ 3& 165\\ 4& 174\\ 5& 192\end{array}$

Answer the following questions based on the above information.

Write your final answer only $($without intermediate steps$)$ for the fill$-$in$-$the$-$blank questions.

a$.$ Exponential smoothing method with smoothing constant $a=0\mathrm{.}4.$ Suppose that the forecast for Week $5$ is $197.$ The forecast for Week $6=$

b$.$ Three$-$week moving average method. The forecast for Week $6=$

c$.$ Na$$ve method. The forecast for Week $6=$

d$.$ Four$-$week moving average method. The forecast for Week $6=$