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Finding the Fourth Proportional to 120,350.44, 166,084.95 and 66,640.42

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Solution

The fourth proportional to 120,350.44, 166,084.95 and 66,640.42 is: 91,964.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,350.44 : 166,084.95 = 66,640.42 : x
  2. Step 2: Convert to fraction form
    120,350.44/166,084.95 = 66,640.42/x
  3. Step 3: Cross multiply
    120,350.44x = 166,084.95 × 66,640.42
  4. Step 4: Simplify right side
    120,350.44x = 11,067,970,823.68
  5. Step 5: Solve for x
    x = 11,067,970,823.68/120,350.44
  6. Step 6: Final answer
    x = 91,964.52

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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.