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Finding the Fourth Proportional to 169,956, 254,948.58 and 81,280.44

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Solution

The fourth proportional to 169,956, 254,948.58 and 81,280.44 is: 121,927.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,956 : 254,948.58 = 81,280.44 : x
  2. Step 2: Convert to fraction form
    169,956/254,948.58 = 81,280.44/x
  3. Step 3: Cross multiply
    169,956x = 254,948.58 × 81,280.44
  4. Step 4: Simplify right side
    169,956x = 20,722,332,759.78
  5. Step 5: Solve for x
    x = 20,722,332,759.78/169,956
  6. Step 6: Final answer
    x = 121,927.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.