Home / 100,243.06-138,335.42-54,922.76

Finding the Fourth Proportional to 100,243.06, 138,335.42 and 54,922.76

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Solution

The fourth proportional to 100,243.06, 138,335.42 and 54,922.76 is: 75,793.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,243.06 : 138,335.42 = 54,922.76 : x
  2. Step 2: Convert to fraction form
    100,243.06/138,335.42 = 54,922.76/x
  3. Step 3: Cross multiply
    100,243.06x = 138,335.42 × 54,922.76
  4. Step 4: Simplify right side
    100,243.06x = 7,597,763,072.16
  5. Step 5: Solve for x
    x = 7,597,763,072.16/100,243.06
  6. Step 6: Final answer
    x = 75,793.41

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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.