Finding the Fourth Proportional to 123,402.99, 170,286.78 and 69,680.55
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Solution
The fourth proportional to 123,402.99, 170,286.78 and 69,680.55 is: 96,153.88
Step by Step Solution
- Step 1: Write the proportion equation
123,402.99 : 170,286.78 = 69,680.55 : x - Step 2: Convert to fraction form
123,402.99/170,286.78 = 69,680.55/x - Step 3: Cross multiply
123,402.99x = 170,286.78 × 69,680.55 - Step 4: Simplify right side
123,402.99x = 11,865,676,488.13 - Step 5: Solve for x
x = 11,865,676,488.13/123,402.99 - Step 6: Final answer
x = 96,153.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.