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Finding the Fourth Proportional to 154,611.44, 213,793.28 and 122,725

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Solution

The fourth proportional to 154,611.44, 213,793.28 and 122,725 is: 169,701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,611.44 : 213,793.28 = 122,725 : x
  2. Step 2: Convert to fraction form
    154,611.44/213,793.28 = 122,725/x
  3. Step 3: Cross multiply
    154,611.44x = 213,793.28 × 122,725
  4. Step 4: Simplify right side
    154,611.44x = 26,237,780,288
  5. Step 5: Solve for x
    x = 26,237,780,288/154,611.44
  6. Step 6: Final answer
    x = 169,701.42

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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.