Home / 133,025.60-199,279.20-80,278.40

Finding the Fourth Proportional to 133,025.60, 199,279.20 and 80,278.40

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Solution

The fourth proportional to 133,025.60, 199,279.20 and 80,278.40 is: 120,261.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,025.60 : 199,279.20 = 80,278.40 : x
  2. Step 2: Convert to fraction form
    133,025.60/199,279.20 = 80,278.40/x
  3. Step 3: Cross multiply
    133,025.60x = 199,279.20 × 80,278.40
  4. Step 4: Simplify right side
    133,025.60x = 15,997,815,329.28
  5. Step 5: Solve for x
    x = 15,997,815,329.28/133,025.60
  6. Step 6: Final answer
    x = 120,261.18

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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.