Finding the Fourth Proportional to 100,230.26, 138,317.82 and 54,909.88
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Solution
The fourth proportional to 100,230.26, 138,317.82 and 54,909.88 is: 75,775.67
Step by Step Solution
- Step 1: Write the proportion equation
100,230.26 : 138,317.82 = 54,909.88 : x - Step 2: Convert to fraction form
100,230.26/138,317.82 = 54,909.88/x - Step 3: Cross multiply
100,230.26x = 138,317.82 × 54,909.88 - Step 4: Simplify right side
100,230.26x = 7,595,014,898.06 - Step 5: Solve for x
x = 7,595,014,898.06/100,230.26 - Step 6: Final answer
x = 75,775.67
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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.