Home / 100,216.82-138,301.20-54,894.80

Finding the Fourth Proportional to 100,216.82, 138,301.20 and 54,894.80

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Solution

The fourth proportional to 100,216.82, 138,301.20 and 54,894.80 is: 75,755.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,216.82 : 138,301.20 = 54,894.80 : x
  2. Step 2: Convert to fraction form
    100,216.82/138,301.20 = 54,894.80/x
  3. Step 3: Cross multiply
    100,216.82x = 138,301.20 × 54,894.80
  4. Step 4: Simplify right side
    100,216.82x = 7,592,016,713.76
  5. Step 5: Solve for x
    x = 7,592,016,713.76/100,216.82
  6. Step 6: Final answer
    x = 75,755.91

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1.5x scale

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.