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Finding the Fourth Proportional to 192,908.90, 289,363.36 and 80,527.82

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Solution

The fourth proportional to 192,908.90, 289,363.36 and 80,527.82 is: 120,791.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,908.90 : 289,363.36 = 80,527.82 : x
  2. Step 2: Convert to fraction form
    192,908.90/289,363.36 = 80,527.82/x
  3. Step 3: Cross multiply
    192,908.90x = 289,363.36 × 80,527.82
  4. Step 4: Simplify right side
    192,908.90x = 23,301,800,568.68
  5. Step 5: Solve for x
    x = 23,301,800,568.68/192,908.90
  6. Step 6: Final answer
    x = 120,791.73

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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.