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Finding the Fourth Proportional to 120,887.91, 166,822.00 and 67,171.55

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Solution

The fourth proportional to 120,887.91, 166,822.00 and 67,171.55 is: 92,694.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,887.91 : 166,822.00 = 67,171.55 : x
  2. Step 2: Convert to fraction form
    120,887.91/166,822.00 = 67,171.55/x
  3. Step 3: Cross multiply
    120,887.91x = 166,822.00 × 67,171.55
  4. Step 4: Simplify right side
    120,887.91x = 11,205,691,563.95
  5. Step 5: Solve for x
    x = 11,205,691,563.95/120,887.91
  6. Step 6: Final answer
    x = 92,694.89

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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.