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Finding the Fourth Proportional to 128,873.75, 193,231.22 and 44,614.31

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Solution

The fourth proportional to 128,873.75, 193,231.22 and 44,614.31 is: 66,893.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,873.75 : 193,231.22 = 44,614.31 : x
  2. Step 2: Convert to fraction form
    128,873.75/193,231.22 = 44,614.31/x
  3. Step 3: Cross multiply
    128,873.75x = 193,231.22 × 44,614.31
  4. Step 4: Simplify right side
    128,873.75x = 8,620,876,361.53
  5. Step 5: Solve for x
    x = 8,620,876,361.53/128,873.75
  6. Step 6: Final answer
    x = 66,893.97

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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.