Finding the Fourth Proportional to 100,324.64, 138,447.24 and 55,002.08
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Solution
The fourth proportional to 100,324.64, 138,447.24 and 55,002.08 is: 75,902.45
Step by Step Solution
- Step 1: Write the proportion equation
100,324.64 : 138,447.24 = 55,002.08 : x - Step 2: Convert to fraction form
100,324.64/138,447.24 = 55,002.08/x - Step 3: Cross multiply
100,324.64x = 138,447.24 × 55,002.08 - Step 4: Simplify right side
100,324.64x = 7,614,886,170.26 - Step 5: Solve for x
x = 7,614,886,170.26/100,324.64 - Step 6: Final answer
x = 75,902.45
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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.