Finding the Fourth Proportional to 139,162.14, 192,143.61 and 85,519.08
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Solution
The fourth proportional to 139,162.14, 192,143.61 and 85,519.08 is: 118,077.70
Step by Step Solution
- Step 1: Write the proportion equation
139,162.14 : 192,143.61 = 85,519.08 : x - Step 2: Convert to fraction form
139,162.14/192,143.61 = 85,519.08/x - Step 3: Cross multiply
139,162.14x = 192,143.61 × 85,519.08 - Step 4: Simplify right side
139,162.14x = 16,431,944,755.08 - Step 5: Solve for x
x = 16,431,944,755.08/139,162.14 - Step 6: Final answer
x = 118,077.70
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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.