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Finding the Fourth Proportional to 128,856.67, 193,238.68 and 44,593.96

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Solution

The fourth proportional to 128,856.67, 193,238.68 and 44,593.96 is: 66,874.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,856.67 : 193,238.68 = 44,593.96 : x
  2. Step 2: Convert to fraction form
    128,856.67/193,238.68 = 44,593.96/x
  3. Step 3: Cross multiply
    128,856.67x = 193,238.68 × 44,593.96
  4. Step 4: Simplify right side
    128,856.67x = 8,617,277,966.37
  5. Step 5: Solve for x
    x = 8,617,277,966.37/128,856.67
  6. Step 6: Final answer
    x = 66,874.91

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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.