Finding the Fourth Proportional to 129,800.12, 176,721.29 and 129,400.28
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Solution
The fourth proportional to 129,800.12, 176,721.29 and 129,400.28 is: 176,176.92
Step by Step Solution
- Step 1: Write the proportion equation
129,800.12 : 176,721.29 = 129,400.28 : x - Step 2: Convert to fraction form
129,800.12/176,721.29 = 129,400.28/x - Step 3: Cross multiply
129,800.12x = 176,721.29 × 129,400.28 - Step 4: Simplify right side
129,800.12x = 22,867,785,747.24 - Step 5: Solve for x
x = 22,867,785,747.24/129,800.12 - Step 6: Final answer
x = 176,176.92
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.