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Finding the Fourth Proportional to 104,540.96, 156,711 and 66,995.84

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Solution

The fourth proportional to 104,540.96, 156,711 and 66,995.84 is: 100,429.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,540.96 : 156,711 = 66,995.84 : x
  2. Step 2: Convert to fraction form
    104,540.96/156,711 = 66,995.84/x
  3. Step 3: Cross multiply
    104,540.96x = 156,711 × 66,995.84
  4. Step 4: Simplify right side
    104,540.96x = 10,498,985,082.24
  5. Step 5: Solve for x
    x = 10,498,985,082.24/104,540.96
  6. Step 6: Final answer
    x = 100,429.39

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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.