Home / 90,688.20-135,773.10-80,320.20

Finding the Fourth Proportional to 90,688.20, 135,773.10 and 80,320.20

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Solution

The fourth proportional to 90,688.20, 135,773.10 and 80,320.20 is: 120,250.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,688.20 : 135,773.10 = 80,320.20 : x
  2. Step 2: Convert to fraction form
    90,688.20/135,773.10 = 80,320.20/x
  3. Step 3: Cross multiply
    90,688.20x = 135,773.10 × 80,320.20
  4. Step 4: Simplify right side
    90,688.20x = 10,905,322,546.62
  5. Step 5: Solve for x
    x = 10,905,322,546.62/90,688.20
  6. Step 6: Final answer
    x = 120,250.73

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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.