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Finding the Fourth Proportional to 198,129, 273,422.84 and 108,705

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Solution

The fourth proportional to 198,129, 273,422.84 and 108,705 is: 150,015.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,129 : 273,422.84 = 108,705 : x
  2. Step 2: Convert to fraction form
    198,129/273,422.84 = 108,705/x
  3. Step 3: Cross multiply
    198,129x = 273,422.84 × 108,705
  4. Step 4: Simplify right side
    198,129x = 29,722,429,822.20
  5. Step 5: Solve for x
    x = 29,722,429,822.20/198,129
  6. Step 6: Final answer
    x = 150,015.54

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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.