Finding the Fourth Proportional to 125,128.84, 172,679.70 and 68,545.48
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Solution
The fourth proportional to 125,128.84, 172,679.70 and 68,545.48 is: 94,593.80
Step by Step Solution
- Step 1: Write the proportion equation
125,128.84 : 172,679.70 = 68,545.48 : x - Step 2: Convert to fraction form
125,128.84/172,679.70 = 68,545.48/x - Step 3: Cross multiply
125,128.84x = 172,679.70 × 68,545.48 - Step 4: Simplify right side
125,128.84x = 11,836,412,922.76 - Step 5: Solve for x
x = 11,836,412,922.76/125,128.84 - Step 6: Final answer
x = 94,593.80
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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.