Finding the Fourth Proportional to 139,229.13, 192,186.08 and 82,640.50
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Solution
The fourth proportional to 139,229.13, 192,186.08 and 82,640.50 is: 114,073.50
Step by Step Solution
- Step 1: Write the proportion equation
139,229.13 : 192,186.08 = 82,640.50 : x - Step 2: Convert to fraction form
139,229.13/192,186.08 = 82,640.50/x - Step 3: Cross multiply
139,229.13x = 192,186.08 × 82,640.50 - Step 4: Simplify right side
139,229.13x = 15,882,353,744.24 - Step 5: Solve for x
x = 15,882,353,744.24/139,229.13 - Step 6: Final answer
x = 114,073.50
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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.