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Finding the Fourth Proportional to 192,389.70, 288,637.41 and 80,122.49

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Solution

The fourth proportional to 192,389.70, 288,637.41 and 80,122.49 is: 120,205.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,389.70 : 288,637.41 = 80,122.49 : x
  2. Step 2: Convert to fraction form
    192,389.70/288,637.41 = 80,122.49/x
  3. Step 3: Cross multiply
    192,389.70x = 288,637.41 × 80,122.49
  4. Step 4: Simplify right side
    192,389.70x = 23,126,346,553.16
  5. Step 5: Solve for x
    x = 23,126,346,553.16/192,389.70
  6. Step 6: Final answer
    x = 120,205.74

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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.