Home / 135,841.28-187,459.17-77,697.62

Finding the Fourth Proportional to 135,841.28, 187,459.17 and 77,697.62

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Solution

The fourth proportional to 135,841.28, 187,459.17 and 77,697.62 is: 107,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,841.28 : 187,459.17 = 77,697.62 : x
  2. Step 2: Convert to fraction form
    135,841.28/187,459.17 = 77,697.62/x
  3. Step 3: Cross multiply
    135,841.28x = 187,459.17 × 77,697.62
  4. Step 4: Simplify right side
    135,841.28x = 14,565,131,236.10
  5. Step 5: Solve for x
    x = 14,565,131,236.10/135,841.28
  6. Step 6: Final answer
    x = 107,221.69

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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.