Home / 104,572.18-156,722.19-42,169.78

Finding the Fourth Proportional to 104,572.18, 156,722.19 and 42,169.78

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Solution

The fourth proportional to 104,572.18, 156,722.19 and 42,169.78 is: 63,199.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,572.18 : 156,722.19 = 42,169.78 : x
  2. Step 2: Convert to fraction form
    104,572.18/156,722.19 = 42,169.78/x
  3. Step 3: Cross multiply
    104,572.18x = 156,722.19 × 42,169.78
  4. Step 4: Simplify right side
    104,572.18x = 6,608,940,273.42
  5. Step 5: Solve for x
    x = 6,608,940,273.42/104,572.18
  6. Step 6: Final answer
    x = 63,199.79

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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.