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Finding the Fourth Proportional to 192,668.82, 289,086.26 and 80,371.16

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Solution

The fourth proportional to 192,668.82, 289,086.26 and 80,371.16 is: 120,591.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,668.82 : 289,086.26 = 80,371.16 : x
  2. Step 2: Convert to fraction form
    192,668.82/289,086.26 = 80,371.16/x
  3. Step 3: Cross multiply
    192,668.82x = 289,086.26 × 80,371.16
  4. Step 4: Simplify right side
    192,668.82x = 23,234,196,208.97
  5. Step 5: Solve for x
    x = 23,234,196,208.97/192,668.82
  6. Step 6: Final answer
    x = 120,591.37

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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.