Home / 135,627.72-187,254.11-87,251.28

Finding the Fourth Proportional to 135,627.72, 187,254.11 and 87,251.28

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Solution

The fourth proportional to 135,627.72, 187,254.11 and 87,251.28 is: 120,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,627.72 : 187,254.11 = 87,251.28 : x
  2. Step 2: Convert to fraction form
    135,627.72/187,254.11 = 87,251.28/x
  3. Step 3: Cross multiply
    135,627.72x = 187,254.11 × 87,251.28
  4. Step 4: Simplify right side
    135,627.72x = 16,338,160,346.50
  5. Step 5: Solve for x
    x = 16,338,160,346.50/135,627.72
  6. Step 6: Final answer
    x = 120,463.28

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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.