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Part 1

The manager of a utility company in the Texas panhandle wants to develop quarterly forecasts of power loads for the next year. The power loads are seasonal, and the data on the quarterly loads in megawatts (MW) for the last four years are as follows:

QuarterYear 1Year 2Year 3Year 4 1 104.596.4121.4103.9 2 126.5113.8152.7133.1 3 144.1143.4161.4154.3 4 163.1152.7179.8169.0

The manager estimates the total demand for the next year at 697 MW. Use the multiplicative seasonal method to develop the forecast for each quarter.

The first quarter forecast is

The second quarter forecast is

The third quarter forecast is

The forth quarter forecast is