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Finding the Fourth Proportional to 107,418.68, 161,128.08 and 40,843.44

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Solution

The fourth proportional to 107,418.68, 161,128.08 and 40,843.44 is: 61,265.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,418.68 : 161,128.08 = 40,843.44 : x
  2. Step 2: Convert to fraction form
    107,418.68/161,128.08 = 40,843.44/x
  3. Step 3: Cross multiply
    107,418.68x = 161,128.08 × 40,843.44
  4. Step 4: Simplify right side
    107,418.68x = 6,581,025,067.80
  5. Step 5: Solve for x
    x = 6,581,025,067.80/107,418.68
  6. Step 6: Final answer
    x = 61,265.18

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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.