Finding the Fourth Proportional to 87,093.92, 129,917.60 and 84,178.46
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Solution
The fourth proportional to 87,093.92, 129,917.60 and 84,178.46 is: 125,568.62
Step by Step Solution
- Step 1: Write the proportion equation
87,093.92 : 129,917.60 = 84,178.46 : x - Step 2: Convert to fraction form
87,093.92/129,917.60 = 84,178.46/x - Step 3: Cross multiply
87,093.92x = 129,917.60 × 84,178.46 - Step 4: Simplify right side
87,093.92x = 10,936,262,424.42 - Step 5: Solve for x
x = 10,936,262,424.42/87,093.92 - Step 6: Final answer
x = 125,568.62
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.