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Finding the Fourth Proportional to 192,871.33, 289,353.18 and 80,489.03

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Solution

The fourth proportional to 192,871.33, 289,353.18 and 80,489.03 is: 120,752.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,871.33 : 289,353.18 = 80,489.03 : x
  2. Step 2: Convert to fraction form
    192,871.33/289,353.18 = 80,489.03/x
  3. Step 3: Cross multiply
    192,871.33x = 289,353.18 × 80,489.03
  4. Step 4: Simplify right side
    192,871.33x = 23,289,756,785.62
  5. Step 5: Solve for x
    x = 23,289,756,785.62/192,871.33
  6. Step 6: Final answer
    x = 120,752.82

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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.