Home / 185,014.74-255,321.09-100,131.78

Finding the Fourth Proportional to 185,014.74, 255,321.09 and 100,131.78

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Solution

The fourth proportional to 185,014.74, 255,321.09 and 100,131.78 is: 138,182.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,014.74 : 255,321.09 = 100,131.78 : x
  2. Step 2: Convert to fraction form
    185,014.74/255,321.09 = 100,131.78/x
  3. Step 3: Cross multiply
    185,014.74x = 255,321.09 × 100,131.78
  4. Step 4: Simplify right side
    185,014.74x = 25,565,755,213.24
  5. Step 5: Solve for x
    x = 25,565,755,213.24/185,014.74
  6. Step 6: Final answer
    x = 138,182.26

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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.