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Finding the Fourth Proportional to 140,561.26, 210,841.72 and 45,791.29

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Solution

The fourth proportional to 140,561.26, 210,841.72 and 45,791.29 is: 68,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,561.26 : 210,841.72 = 45,791.29 : x
  2. Step 2: Convert to fraction form
    140,561.26/210,841.72 = 45,791.29/x
  3. Step 3: Cross multiply
    140,561.26x = 210,841.72 × 45,791.29
  4. Step 4: Simplify right side
    140,561.26x = 9,654,714,344.62
  5. Step 5: Solve for x
    x = 9,654,714,344.62/140,561.26
  6. Step 6: Final answer
    x = 68,686.88

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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.