Finding the Fourth Proportional to 100,470.88, 138,649.36 and 55,148.96
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Solution
The fourth proportional to 100,470.88, 138,649.36 and 55,148.96 is: 76,105.32
Step by Step Solution
- Step 1: Write the proportion equation
100,470.88 : 138,649.36 = 55,148.96 : x - Step 2: Convert to fraction form
100,470.88/138,649.36 = 55,148.96/x - Step 3: Cross multiply
100,470.88x = 138,649.36 × 55,148.96 - Step 4: Simplify right side
100,470.88x = 7,646,368,008.67 - Step 5: Solve for x
x = 7,646,368,008.67/100,470.88 - Step 6: Final answer
x = 76,105.32
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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.