Finding the Fourth Proportional to 99,198.70, 136,894.17 and 53,876.62
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Solution
The fourth proportional to 99,198.70, 136,894.17 and 53,876.62 is: 74,349.72
Step by Step Solution
- Step 1: Write the proportion equation
99,198.70 : 136,894.17 = 53,876.62 : x - Step 2: Convert to fraction form
99,198.70/136,894.17 = 53,876.62/x - Step 3: Cross multiply
99,198.70x = 136,894.17 × 53,876.62 - Step 4: Simplify right side
99,198.70x = 7,375,395,177.31 - Step 5: Solve for x
x = 7,375,395,177.31/99,198.70 - Step 6: Final answer
x = 74,349.72
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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.