Finding the Fourth Proportional to 100,240.36, 138,331.62 and 54,921.17
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Solution
The fourth proportional to 100,240.36, 138,331.62 and 54,921.17 is: 75,791.18
Step by Step Solution
- Step 1: Write the proportion equation
100,240.36 : 138,331.62 = 54,921.17 : x - Step 2: Convert to fraction form
100,240.36/138,331.62 = 54,921.17/x - Step 3: Cross multiply
100,240.36x = 138,331.62 × 54,921.17 - Step 4: Simplify right side
100,240.36x = 7,597,334,764.22 - Step 5: Solve for x
x = 7,597,334,764.22/100,240.36 - Step 6: Final answer
x = 75,791.18
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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.