Home / 90,077.60-135,193.20-40,234.40

Finding the Fourth Proportional to 90,077.60, 135,193.20 and 40,234.40

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Solution

The fourth proportional to 90,077.60, 135,193.20 and 40,234.40 is: 60,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,077.60 : 135,193.20 = 40,234.40 : x
  2. Step 2: Convert to fraction form
    90,077.60/135,193.20 = 40,234.40/x
  3. Step 3: Cross multiply
    90,077.60x = 135,193.20 × 40,234.40
  4. Step 4: Simplify right side
    90,077.60x = 5,439,417,286.08
  5. Step 5: Solve for x
    x = 5,439,417,286.08/90,077.60
  6. Step 6: Final answer
    x = 60,385.90

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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.