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Finding the Fourth Proportional to 133,027.60, 199,282.20 and 80,280.40

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Solution

The fourth proportional to 133,027.60, 199,282.20 and 80,280.40 is: 120,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,027.60 : 199,282.20 = 80,280.40 : x
  2. Step 2: Convert to fraction form
    133,027.60/199,282.20 = 80,280.40/x
  3. Step 3: Cross multiply
    133,027.60x = 199,282.20 × 80,280.40
  4. Step 4: Simplify right side
    133,027.60x = 15,998,454,728.88
  5. Step 5: Solve for x
    x = 15,998,454,728.88/133,027.60
  6. Step 6: Final answer
    x = 120,264.18

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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.