Finding the Fourth Proportional to 140,151.87, 193,414.09 and 79,720.96
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Solution
The fourth proportional to 140,151.87, 193,414.09 and 79,720.96 is: 110,017.49
Step by Step Solution
- Step 1: Write the proportion equation
140,151.87 : 193,414.09 = 79,720.96 : x - Step 2: Convert to fraction form
140,151.87/193,414.09 = 79,720.96/x - Step 3: Cross multiply
140,151.87x = 193,414.09 × 79,720.96 - Step 4: Simplify right side
140,151.87x = 15,419,156,932.33 - Step 5: Solve for x
x = 15,419,156,932.33/140,151.87 - Step 6: Final answer
x = 110,017.49
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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.