Home / 120,787.20-166,659.46-73,039.52

Finding the Fourth Proportional to 120,787.20, 166,659.46 and 73,039.52

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Solution

The fourth proportional to 120,787.20, 166,659.46 and 73,039.52 is: 100,778.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,787.20 : 166,659.46 = 73,039.52 : x
  2. Step 2: Convert to fraction form
    120,787.20/166,659.46 = 73,039.52/x
  3. Step 3: Cross multiply
    120,787.20x = 166,659.46 × 73,039.52
  4. Step 4: Simplify right side
    120,787.20x = 12,172,726,961.86
  5. Step 5: Solve for x
    x = 12,172,726,961.86/120,787.20
  6. Step 6: Final answer
    x = 100,778.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.