Finding the Fourth Proportional to 123,358.61, 170,234.87 and 66,769.99
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Solution
The fourth proportional to 123,358.61, 170,234.87 and 66,769.99 is: 92,142.57
Step by Step Solution
- Step 1: Write the proportion equation
123,358.61 : 170,234.87 = 66,769.99 : x - Step 2: Convert to fraction form
123,358.61/170,234.87 = 66,769.99/x - Step 3: Cross multiply
123,358.61x = 170,234.87 × 66,769.99 - Step 4: Simplify right side
123,358.61x = 11,366,579,808.11 - Step 5: Solve for x
x = 11,366,579,808.11/123,358.61 - Step 6: Final answer
x = 92,142.57
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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.