Finding the Fourth Proportional to 138,887.44, 208,340.88 and 68,747.92
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Solution
The fourth proportional to 138,887.44, 208,340.88 and 68,747.92 is: 103,126.69
Step by Step Solution
- Step 1: Write the proportion equation
138,887.44 : 208,340.88 = 68,747.92 : x - Step 2: Convert to fraction form
138,887.44/208,340.88 = 68,747.92/x - Step 3: Cross multiply
138,887.44x = 208,340.88 × 68,747.92 - Step 4: Simplify right side
138,887.44x = 14,323,002,150.97 - Step 5: Solve for x
x = 14,323,002,150.97/138,887.44 - Step 6: Final answer
x = 103,126.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.