Finding the Fourth Proportional to 138,514.42, 207,791.61 and 43,712.38
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Solution
The fourth proportional to 138,514.42, 207,791.61 and 43,712.38 is: 65,574.88
Step by Step Solution
- Step 1: Write the proportion equation
138,514.42 : 207,791.61 = 43,712.38 : x - Step 2: Convert to fraction form
138,514.42/207,791.61 = 43,712.38/x - Step 3: Cross multiply
138,514.42x = 207,791.61 × 43,712.38 - Step 4: Simplify right side
138,514.42x = 9,083,065,817.13 - Step 5: Solve for x
x = 9,083,065,817.13/138,514.42 - Step 6: Final answer
x = 65,574.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.