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Finding the Fourth Proportional to 120,976.88, 166,940.19 and 67,259.90

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Solution

The fourth proportional to 120,976.88, 166,940.19 and 67,259.90 is: 92,814.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,976.88 : 166,940.19 = 67,259.90 : x
  2. Step 2: Convert to fraction form
    120,976.88/166,940.19 = 67,259.90/x
  3. Step 3: Cross multiply
    120,976.88x = 166,940.19 × 67,259.90
  4. Step 4: Simplify right side
    120,976.88x = 11,228,380,902.73
  5. Step 5: Solve for x
    x = 11,228,380,902.73/120,976.88
  6. Step 6: Final answer
    x = 92,814.27

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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.