Finding the Fourth Proportional to 128,470.96, 177,294.72 and 71,882.74
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Solution
The fourth proportional to 128,470.96, 177,294.72 and 71,882.74 is: 99,200.86
Step by Step Solution
- Step 1: Write the proportion equation
128,470.96 : 177,294.72 = 71,882.74 : x - Step 2: Convert to fraction form
128,470.96/177,294.72 = 71,882.74/x - Step 3: Cross multiply
128,470.96x = 177,294.72 × 71,882.74 - Step 4: Simplify right side
128,470.96x = 12,744,430,261.13 - Step 5: Solve for x
x = 12,744,430,261.13/128,470.96 - Step 6: Final answer
x = 99,200.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.