Finding the Fourth Proportional to 100,138.92, 138,174.84 and 59,868.96
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Solution
The fourth proportional to 100,138.92, 138,174.84 and 59,868.96 is: 82,609.08
Step by Step Solution
- Step 1: Write the proportion equation
100,138.92 : 138,174.84 = 59,868.96 : x - Step 2: Convert to fraction form
100,138.92/138,174.84 = 59,868.96/x - Step 3: Cross multiply
100,138.92x = 138,174.84 × 59,868.96 - Step 4: Simplify right side
100,138.92x = 8,272,383,968.97 - Step 5: Solve for x
x = 8,272,383,968.97/100,138.92 - Step 6: Final answer
x = 82,609.08
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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.