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Finding the Fourth Proportional to 90,023.70, 135,035.55 and 88,641.30

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Solution

The fourth proportional to 90,023.70, 135,035.55 and 88,641.30 is: 132,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,023.70 : 135,035.55 = 88,641.30 : x
  2. Step 2: Convert to fraction form
    90,023.70/135,035.55 = 88,641.30/x
  3. Step 3: Cross multiply
    90,023.70x = 135,035.55 × 88,641.30
  4. Step 4: Simplify right side
    90,023.70x = 11,969,726,698.22
  5. Step 5: Solve for x
    x = 11,969,726,698.22/90,023.70
  6. Step 6: Final answer
    x = 132,961.95

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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.