Finding the Fourth Proportional to 100,272.12, 138,375.41 and 54,952.95
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Solution
The fourth proportional to 100,272.12, 138,375.41 and 54,952.95 is: 75,835.00
Step by Step Solution
- Step 1: Write the proportion equation
100,272.12 : 138,375.41 = 54,952.95 : x - Step 2: Convert to fraction form
100,272.12/138,375.41 = 54,952.95/x - Step 3: Cross multiply
100,272.12x = 138,375.41 × 54,952.95 - Step 4: Simplify right side
100,272.12x = 7,604,136,712.19 - Step 5: Solve for x
x = 7,604,136,712.19/100,272.12 - Step 6: Final answer
x = 75,835.00
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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.