Finding the Fourth Proportional to 123,490.61, 170,417.05 and 66,901.99
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Solution
The fourth proportional to 123,490.61, 170,417.05 and 66,901.99 is: 92,324.74
Step by Step Solution
- Step 1: Write the proportion equation
123,490.61 : 170,417.05 = 66,901.99 : x - Step 2: Convert to fraction form
123,490.61/170,417.05 = 66,901.99/x - Step 3: Cross multiply
123,490.61x = 170,417.05 × 66,901.99 - Step 4: Simplify right side
123,490.61x = 11,401,238,922.84 - Step 5: Solve for x
x = 11,401,238,922.84/123,490.61 - Step 6: Final answer
x = 92,324.74
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1.5x scale
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.