Home / 126,981.89-175,199.52-100,040.76

Finding the Fourth Proportional to 126,981.89, 175,199.52 and 100,040.76

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Solution

The fourth proportional to 126,981.89, 175,199.52 and 100,040.76 is: 138,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,981.89 : 175,199.52 = 100,040.76 : x
  2. Step 2: Convert to fraction form
    126,981.89/175,199.52 = 100,040.76/x
  3. Step 3: Cross multiply
    126,981.89x = 175,199.52 × 100,040.76
  4. Step 4: Simplify right side
    126,981.89x = 17,527,093,132.44
  5. Step 5: Solve for x
    x = 17,527,093,132.44/126,981.89
  6. Step 6: Final answer
    x = 138,028.30

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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.