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Finding the Fourth Proportional to 123,912.56, 171,001.86 and 67,327.58

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Solution

The fourth proportional to 123,912.56, 171,001.86 and 67,327.58 is: 92,913.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,912.56 : 171,001.86 = 67,327.58 : x
  2. Step 2: Convert to fraction form
    123,912.56/171,001.86 = 67,327.58/x
  3. Step 3: Cross multiply
    123,912.56x = 171,001.86 × 67,327.58
  4. Step 4: Simplify right side
    123,912.56x = 11,513,141,409.30
  5. Step 5: Solve for x
    x = 11,513,141,409.30/123,912.56
  6. Step 6: Final answer
    x = 92,913.43

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1.5x scale

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.