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Finding the Fourth Proportional to 120,888.10, 166,822.26 and 67,171.73

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Solution

The fourth proportional to 120,888.10, 166,822.26 and 67,171.73 is: 92,695.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,888.10 : 166,822.26 = 67,171.73 : x
  2. Step 2: Convert to fraction form
    120,888.10/166,822.26 = 67,171.73/x
  3. Step 3: Cross multiply
    120,888.10x = 166,822.26 × 67,171.73
  4. Step 4: Simplify right side
    120,888.10x = 11,205,740,223.77
  5. Step 5: Solve for x
    x = 11,205,740,223.77/120,888.10
  6. Step 6: Final answer
    x = 92,695.15

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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.