Finding the Fourth Proportional to 118,631.20, 177,946.80 and 39,737.20
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Solution
The fourth proportional to 118,631.20, 177,946.80 and 39,737.20 is: 59,605.80
Step by Step Solution
- Step 1: Write the proportion equation
118,631.20 : 177,946.80 = 39,737.20 : x - Step 2: Convert to fraction form
118,631.20/177,946.80 = 39,737.20/x - Step 3: Cross multiply
118,631.20x = 177,946.80 × 39,737.20 - Step 4: Simplify right side
118,631.20x = 7,071,107,580.96 - Step 5: Solve for x
x = 7,071,107,580.96/118,631.20 - Step 6: Final answer
x = 59,605.80
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1.5x scale
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.