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Finding the Fourth Proportional to 167,128.57, 250,769.41 and 72,387.73

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Solution

The fourth proportional to 167,128.57, 250,769.41 and 72,387.73 is: 108,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,128.57 : 250,769.41 = 72,387.73 : x
  2. Step 2: Convert to fraction form
    167,128.57/250,769.41 = 72,387.73/x
  3. Step 3: Cross multiply
    167,128.57x = 250,769.41 × 72,387.73
  4. Step 4: Simplify right side
    167,128.57x = 18,152,628,343.34
  5. Step 5: Solve for x
    x = 18,152,628,343.34/167,128.57
  6. Step 6: Final answer
    x = 108,614.75

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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.