Finding the Fourth Proportional to 99,163.17, 136,845.09 and 54,451.17
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Solution
The fourth proportional to 99,163.17, 136,845.09 and 54,451.17 is: 75,142.57
Step by Step Solution
- Step 1: Write the proportion equation
99,163.17 : 136,845.09 = 54,451.17 : x - Step 2: Convert to fraction form
99,163.17/136,845.09 = 54,451.17/x - Step 3: Cross multiply
99,163.17x = 136,845.09 × 54,451.17 - Step 4: Simplify right side
99,163.17x = 7,451,375,259.26 - Step 5: Solve for x
x = 7,451,375,259.26/99,163.17 - Step 6: Final answer
x = 75,142.57
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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.