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Finding the Fourth Proportional to 120,911.14, 166,854.03 and 67,194.79

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Solution

The fourth proportional to 120,911.14, 166,854.03 and 67,194.79 is: 92,726.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,911.14 : 166,854.03 = 67,194.79 : x
  2. Step 2: Convert to fraction form
    120,911.14/166,854.03 = 67,194.79/x
  3. Step 3: Cross multiply
    120,911.14x = 166,854.03 × 67,194.79
  4. Step 4: Simplify right side
    120,911.14x = 11,211,721,506.50
  5. Step 5: Solve for x
    x = 11,211,721,506.50/120,911.14
  6. Step 6: Final answer
    x = 92,726.95

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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.