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Finding the Fourth Proportional to 187,213.20, 280,819.80 and 104,107.20

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Solution

The fourth proportional to 187,213.20, 280,819.80 and 104,107.20 is: 156,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,213.20 : 280,819.80 = 104,107.20 : x
  2. Step 2: Convert to fraction form
    187,213.20/280,819.80 = 104,107.20/x
  3. Step 3: Cross multiply
    187,213.20x = 280,819.80 × 104,107.20
  4. Step 4: Simplify right side
    187,213.20x = 29,235,363,082.56
  5. Step 5: Solve for x
    x = 29,235,363,082.56/187,213.20
  6. Step 6: Final answer
    x = 156,160.80

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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.