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Finding the Fourth Proportional to 123,910.76, 170,994.75 and 67,321.73

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Solution

The fourth proportional to 123,910.76, 170,994.75 and 67,321.73 is: 92,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,910.76 : 170,994.75 = 67,321.73 : x
  2. Step 2: Convert to fraction form
    123,910.76/170,994.75 = 67,321.73/x
  3. Step 3: Cross multiply
    123,910.76x = 170,994.75 × 67,321.73
  4. Step 4: Simplify right side
    123,910.76x = 11,511,662,565.95
  5. Step 5: Solve for x
    x = 11,511,662,565.95/123,910.76
  6. Step 6: Final answer
    x = 92,902.85

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1.5x scale

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.