Finding the Fourth Proportional to 100,519.20, 138,717.09 and 58,077.99
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Solution
The fourth proportional to 100,519.20, 138,717.09 and 58,077.99 is: 80,147.97
Step by Step Solution
- Step 1: Write the proportion equation
100,519.20 : 138,717.09 = 58,077.99 : x - Step 2: Convert to fraction form
100,519.20/138,717.09 = 58,077.99/x - Step 3: Cross multiply
100,519.20x = 138,717.09 × 58,077.99 - Step 4: Simplify right side
100,519.20x = 8,056,409,765.85 - Step 5: Solve for x
x = 8,056,409,765.85/100,519.20 - Step 6: Final answer
x = 80,147.97
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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.