Home / 141,439.12-195,186.68-77,781.04

Finding the Fourth Proportional to 141,439.12, 195,186.68 and 77,781.04

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Solution

The fourth proportional to 141,439.12, 195,186.68 and 77,781.04 is: 107,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,439.12 : 195,186.68 = 77,781.04 : x
  2. Step 2: Convert to fraction form
    141,439.12/195,186.68 = 77,781.04/x
  3. Step 3: Cross multiply
    141,439.12x = 195,186.68 × 77,781.04
  4. Step 4: Simplify right side
    141,439.12x = 15,181,822,964.55
  5. Step 5: Solve for x
    x = 15,181,822,964.55/141,439.12
  6. Step 6: Final answer
    x = 107,338.22

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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.