Home / 187,105.91-280,469.75-80,559.36

Finding the Fourth Proportional to 187,105.91, 280,469.75 and 80,559.36

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Solution

The fourth proportional to 187,105.91, 280,469.75 and 80,559.36 is: 120,757.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,105.91 : 280,469.75 = 80,559.36 : x
  2. Step 2: Convert to fraction form
    187,105.91/280,469.75 = 80,559.36/x
  3. Step 3: Cross multiply
    187,105.91x = 280,469.75 × 80,559.36
  4. Step 4: Simplify right side
    187,105.91x = 22,594,463,156.56
  5. Step 5: Solve for x
    x = 22,594,463,156.56/187,105.91
  6. Step 6: Final answer
    x = 120,757.62

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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.