Finding the Fourth Proportional to 138,364.30, 207,546.45 and 91,125.10
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Solution
The fourth proportional to 138,364.30, 207,546.45 and 91,125.10 is: 136,687.65
Step by Step Solution
- Step 1: Write the proportion equation
138,364.30 : 207,546.45 = 91,125.10 : x - Step 2: Convert to fraction form
138,364.30/207,546.45 = 91,125.10/x - Step 3: Cross multiply
138,364.30x = 207,546.45 × 91,125.10 - Step 4: Simplify right side
138,364.30x = 18,912,691,010.90 - Step 5: Solve for x
x = 18,912,691,010.90/138,364.30 - Step 6: Final answer
x = 136,687.65
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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.