Finding the Fourth Proportional to 138,327.20, 207,490.80 and 125,861.30
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Solution
The fourth proportional to 138,327.20, 207,490.80 and 125,861.30 is: 188,791.95
Step by Step Solution
- Step 1: Write the proportion equation
138,327.20 : 207,490.80 = 125,861.30 : x - Step 2: Convert to fraction form
138,327.20/207,490.80 = 125,861.30/x - Step 3: Cross multiply
138,327.20x = 207,490.80 × 125,861.30 - Step 4: Simplify right side
138,327.20x = 26,115,061,826.04 - Step 5: Solve for x
x = 26,115,061,826.04/138,327.20 - Step 6: Final answer
x = 188,791.95
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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.