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Finding the Fourth Proportional to 192,371.66, 288,634.24 and 80,129.28

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Solution

The fourth proportional to 192,371.66, 288,634.24 and 80,129.28 is: 120,225.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,371.66 : 288,634.24 = 80,129.28 : x
  2. Step 2: Convert to fraction form
    192,371.66/288,634.24 = 80,129.28/x
  3. Step 3: Cross multiply
    192,371.66x = 288,634.24 × 80,129.28
  4. Step 4: Simplify right side
    192,371.66x = 23,128,053,834.55
  5. Step 5: Solve for x
    x = 23,128,053,834.55/192,371.66
  6. Step 6: Final answer
    x = 120,225.89

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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.