Finding the Fourth Proportional to 100,198.26, 138,273.76 and 54,257.76
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Solution
The fourth proportional to 100,198.26, 138,273.76 and 54,257.76 is: 74,875.80
Step by Step Solution
- Step 1: Write the proportion equation
100,198.26 : 138,273.76 = 54,257.76 : x - Step 2: Convert to fraction form
100,198.26/138,273.76 = 54,257.76/x - Step 3: Cross multiply
100,198.26x = 138,273.76 × 54,257.76 - Step 4: Simplify right side
100,198.26x = 7,502,424,594.05 - Step 5: Solve for x
x = 7,502,424,594.05/100,198.26 - Step 6: Final answer
x = 74,875.80
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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.