Home / 88,930.20-133,395.30-85,819.80

Finding the Fourth Proportional to 88,930.20, 133,395.30 and 85,819.80

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Solution

The fourth proportional to 88,930.20, 133,395.30 and 85,819.80 is: 128,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,930.20 : 133,395.30 = 85,819.80 : x
  2. Step 2: Convert to fraction form
    88,930.20/133,395.30 = 85,819.80/x
  3. Step 3: Cross multiply
    88,930.20x = 133,395.30 × 85,819.80
  4. Step 4: Simplify right side
    88,930.20x = 11,447,957,966.94
  5. Step 5: Solve for x
    x = 11,447,957,966.94/88,930.20
  6. Step 6: Final answer
    x = 128,729.70

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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.