Finding the Fourth Proportional to 100,505.88, 138,687.84 and 58,078.08
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Solution
The fourth proportional to 100,505.88, 138,687.84 and 58,078.08 is: 80,141.81
Step by Step Solution
- Step 1: Write the proportion equation
100,505.88 : 138,687.84 = 58,078.08 : x - Step 2: Convert to fraction form
100,505.88/138,687.84 = 58,078.08/x - Step 3: Cross multiply
100,505.88x = 138,687.84 × 58,078.08 - Step 4: Simplify right side
100,505.88x = 8,054,723,466.55 - Step 5: Solve for x
x = 8,054,723,466.55/100,505.88 - Step 6: Final answer
x = 80,141.81
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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.