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Finding the Fourth Proportional to 88,894.20, 133,414.20 and 85,978.20

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Solution

The fourth proportional to 88,894.20, 133,414.20 and 85,978.20 is: 129,037.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,894.20 : 133,414.20 = 85,978.20 : x
  2. Step 2: Convert to fraction form
    88,894.20/133,414.20 = 85,978.20/x
  3. Step 3: Cross multiply
    88,894.20x = 133,414.20 × 85,978.20
  4. Step 4: Simplify right side
    88,894.20x = 11,470,712,770.44
  5. Step 5: Solve for x
    x = 11,470,712,770.44/88,894.20
  6. Step 6: Final answer
    x = 129,037.81

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1.5x scale

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.