Home / 185,122.72-255,469.50-100,239.88

Finding the Fourth Proportional to 185,122.72, 255,469.50 and 100,239.88

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Solution

The fourth proportional to 185,122.72, 255,469.50 and 100,239.88 is: 138,331.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,122.72 : 255,469.50 = 100,239.88 : x
  2. Step 2: Convert to fraction form
    185,122.72/255,469.50 = 100,239.88/x
  3. Step 3: Cross multiply
    185,122.72x = 255,469.50 × 100,239.88
  4. Step 4: Simplify right side
    185,122.72x = 25,608,232,023.66
  5. Step 5: Solve for x
    x = 25,608,232,023.66/185,122.72
  6. Step 6: Final answer
    x = 138,331.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.