Home / 135,610.28-187,151.30-78,259.88

Finding the Fourth Proportional to 135,610.28, 187,151.30 and 78,259.88

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Solution

The fourth proportional to 135,610.28, 187,151.30 and 78,259.88 is: 108,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,610.28 : 187,151.30 = 78,259.88 : x
  2. Step 2: Convert to fraction form
    135,610.28/187,151.30 = 78,259.88/x
  3. Step 3: Cross multiply
    135,610.28x = 187,151.30 × 78,259.88
  4. Step 4: Simplify right side
    135,610.28x = 14,646,438,279.84
  5. Step 5: Solve for x
    x = 14,646,438,279.84/135,610.28
  6. Step 6: Final answer
    x = 108,003.89

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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.