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Finding the Fourth Proportional to 120,364.97, 166,102.46 and 65,174.03

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Solution

The fourth proportional to 120,364.97, 166,102.46 and 65,174.03 is: 89,939.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,364.97 : 166,102.46 = 65,174.03 : x
  2. Step 2: Convert to fraction form
    120,364.97/166,102.46 = 65,174.03/x
  3. Step 3: Cross multiply
    120,364.97x = 166,102.46 × 65,174.03
  4. Step 4: Simplify right side
    120,364.97x = 10,825,565,554.73
  5. Step 5: Solve for x
    x = 10,825,565,554.73/120,364.97
  6. Step 6: Final answer
    x = 89,939.51

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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.