Finding the Fourth Proportional to 100,416.38, 138,757.96 and 73,144.99
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Solution
The fourth proportional to 100,416.38, 138,757.96 and 73,144.99 is: 101,073.65
Step by Step Solution
- Step 1: Write the proportion equation
100,416.38 : 138,757.96 = 73,144.99 : x - Step 2: Convert to fraction form
100,416.38/138,757.96 = 73,144.99/x - Step 3: Cross multiply
100,416.38x = 138,757.96 × 73,144.99 - Step 4: Simplify right side
100,416.38x = 10,149,449,861.50 - Step 5: Solve for x
x = 10,149,449,861.50/100,416.38 - Step 6: Final answer
x = 101,073.65
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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.