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Finding the Fourth Proportional to 123,912.96, 171,001.44 and 67,325.28

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Solution

The fourth proportional to 123,912.96, 171,001.44 and 67,325.28 is: 92,909.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,912.96 : 171,001.44 = 67,325.28 : x
  2. Step 2: Convert to fraction form
    123,912.96/171,001.44 = 67,325.28/x
  3. Step 3: Cross multiply
    123,912.96x = 171,001.44 × 67,325.28
  4. Step 4: Simplify right side
    123,912.96x = 11,512,719,828.40
  5. Step 5: Solve for x
    x = 11,512,719,828.40/123,912.96
  6. Step 6: Final answer
    x = 92,909.73

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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.