Finding the Fourth Proportional to 138,470.80, 207,268.80 and 108,727.60
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Solution
The fourth proportional to 138,470.80, 207,268.80 and 108,727.60 is: 162,747.95
Step by Step Solution
- Step 1: Write the proportion equation
138,470.80 : 207,268.80 = 108,727.60 : x - Step 2: Convert to fraction form
138,470.80/207,268.80 = 108,727.60/x - Step 3: Cross multiply
138,470.80x = 207,268.80 × 108,727.60 - Step 4: Simplify right side
138,470.80x = 22,535,839,178.88 - Step 5: Solve for x
x = 22,535,839,178.88/138,470.80 - Step 6: Final answer
x = 162,747.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.