Finding the Fourth Proportional to 123,759.48, 185,609.48 and 57,135.62
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Solution
The fourth proportional to 123,759.48, 185,609.48 and 57,135.62 is: 85,689.70
Step by Step Solution
- Step 1: Write the proportion equation
123,759.48 : 185,609.48 = 57,135.62 : x - Step 2: Convert to fraction form
123,759.48/185,609.48 = 57,135.62/x - Step 3: Cross multiply
123,759.48x = 185,609.48 × 57,135.62 - Step 4: Simplify right side
123,759.48x = 10,604,912,717.68 - Step 5: Solve for x
x = 10,604,912,717.68/123,759.48 - Step 6: Final answer
x = 85,689.70
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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.