Home / 239,535.72-359,336.36-81,721.80

Finding the Fourth Proportional to 239,535.72, 359,336.36 and 81,721.80

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Solution

The fourth proportional to 239,535.72, 359,336.36 and 81,721.80 is: 122,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,535.72 : 359,336.36 = 81,721.80 : x
  2. Step 2: Convert to fraction form
    239,535.72/359,336.36 = 81,721.80/x
  3. Step 3: Cross multiply
    239,535.72x = 359,336.36 × 81,721.80
  4. Step 4: Simplify right side
    239,535.72x = 29,365,614,144.65
  5. Step 5: Solve for x
    x = 29,365,614,144.65/239,535.72
  6. Step 6: Final answer
    x = 122,593.88

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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.