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Finding the Fourth Proportional to 267,121.80, 400,682.70 and 80,133.30

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Solution

The fourth proportional to 267,121.80, 400,682.70 and 80,133.30 is: 120,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,121.80 : 400,682.70 = 80,133.30 : x
  2. Step 2: Convert to fraction form
    267,121.80/400,682.70 = 80,133.30/x
  3. Step 3: Cross multiply
    267,121.80x = 400,682.70 × 80,133.30
  4. Step 4: Simplify right side
    267,121.80x = 32,108,027,003.91
  5. Step 5: Solve for x
    x = 32,108,027,003.91/267,121.80
  6. Step 6: Final answer
    x = 120,199.95

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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.