Finding the Fourth Proportional to 138,442.23, 207,711.50 and 43,686.99
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Solution
The fourth proportional to 138,442.23, 207,711.50 and 43,686.99 is: 65,545.68
Step by Step Solution
- Step 1: Write the proportion equation
138,442.23 : 207,711.50 = 43,686.99 : x - Step 2: Convert to fraction form
138,442.23/207,711.50 = 43,686.99/x - Step 3: Cross multiply
138,442.23x = 207,711.50 × 43,686.99 - Step 4: Simplify right side
138,442.23x = 9,074,290,004.95 - Step 5: Solve for x
x = 9,074,290,004.95/138,442.23 - Step 6: Final answer
x = 65,545.68
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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.