Finding the Fourth Proportional to 207,862.60, 311,793.90 and 74,747.20
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Solution
The fourth proportional to 207,862.60, 311,793.90 and 74,747.20 is: 112,120.80
Step by Step Solution
- Step 1: Write the proportion equation
207,862.60 : 311,793.90 = 74,747.20 : x - Step 2: Convert to fraction form
207,862.60/311,793.90 = 74,747.20/x - Step 3: Cross multiply
207,862.60x = 311,793.90 × 74,747.20 - Step 4: Simplify right side
207,862.60x = 23,305,721,002.08 - Step 5: Solve for x
x = 23,305,721,002.08/207,862.60 - Step 6: Final answer
x = 112,120.80
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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.