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Finding the Fourth Proportional to 89,900.20, 134,850.30 and 61,906.60

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Solution

The fourth proportional to 89,900.20, 134,850.30 and 61,906.60 is: 92,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,900.20 : 134,850.30 = 61,906.60 : x
  2. Step 2: Convert to fraction form
    89,900.20/134,850.30 = 61,906.60/x
  3. Step 3: Cross multiply
    89,900.20x = 134,850.30 × 61,906.60
  4. Step 4: Simplify right side
    89,900.20x = 8,348,123,581.98
  5. Step 5: Solve for x
    x = 8,348,123,581.98/89,900.20
  6. Step 6: Final answer
    x = 92,859.90

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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.