Home / 80,138.20-120,218.10-27,563.80

Finding the Fourth Proportional to 80,138.20, 120,218.10 and 27,563.80

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Solution

The fourth proportional to 80,138.20, 120,218.10 and 27,563.80 is: 41,349.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,138.20 : 120,218.10 = 27,563.80 : x
  2. Step 2: Convert to fraction form
    80,138.20/120,218.10 = 27,563.80/x
  3. Step 3: Cross multiply
    80,138.20x = 120,218.10 × 27,563.80
  4. Step 4: Simplify right side
    80,138.20x = 3,313,667,664.78
  5. Step 5: Solve for x
    x = 3,313,667,664.78/80,138.20
  6. Step 6: Final answer
    x = 41,349.41

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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.