Finding the Fourth Proportional to 100,169.71, 138,234.18 and 54,847.69
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Solution
The fourth proportional to 100,169.71, 138,234.18 and 54,847.69 is: 75,689.79
Step by Step Solution
- Step 1: Write the proportion equation
100,169.71 : 138,234.18 = 54,847.69 : x - Step 2: Convert to fraction form
100,169.71/138,234.18 = 54,847.69/x - Step 3: Cross multiply
100,169.71x = 138,234.18 × 54,847.69 - Step 4: Simplify right side
100,169.71x = 7,581,824,760.87 - Step 5: Solve for x
x = 7,581,824,760.87/100,169.71 - Step 6: Final answer
x = 75,689.79
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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.