Finding the Fourth Proportional to 123,160.26, 169,963.05 and 72,160.79
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Solution
The fourth proportional to 123,160.26, 169,963.05 and 72,160.79 is: 99,582.99
Step by Step Solution
- Step 1: Write the proportion equation
123,160.26 : 169,963.05 = 72,160.79 : x - Step 2: Convert to fraction form
123,160.26/169,963.05 = 72,160.79/x - Step 3: Cross multiply
123,160.26x = 169,963.05 × 72,160.79 - Step 4: Simplify right side
123,160.26x = 12,264,667,108.99 - Step 5: Solve for x
x = 12,264,667,108.99/123,160.26 - Step 6: Final answer
x = 99,582.99
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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.