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Finding the Fourth Proportional to 102,168.97, 140,991.83 and 57,456.97

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Solution

The fourth proportional to 102,168.97, 140,991.83 and 57,456.97 is: 79,289.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,168.97 : 140,991.83 = 57,456.97 : x
  2. Step 2: Convert to fraction form
    102,168.97/140,991.83 = 57,456.97/x
  3. Step 3: Cross multiply
    102,168.97x = 140,991.83 × 57,456.97
  4. Step 4: Simplify right side
    102,168.97x = 8,100,963,059.27
  5. Step 5: Solve for x
    x = 8,100,963,059.27/102,168.97
  6. Step 6: Final answer
    x = 79,289.86

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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.