Home / 126,839.72-175,040.10-76,529

Finding the Fourth Proportional to 126,839.72, 175,040.10 and 76,529

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Solution

The fourth proportional to 126,839.72, 175,040.10 and 76,529 is: 105,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,839.72 : 175,040.10 = 76,529 : x
  2. Step 2: Convert to fraction form
    126,839.72/175,040.10 = 76,529/x
  3. Step 3: Cross multiply
    126,839.72x = 175,040.10 × 76,529
  4. Step 4: Simplify right side
    126,839.72x = 13,395,643,812.90
  5. Step 5: Solve for x
    x = 13,395,643,812.90/126,839.72
  6. Step 6: Final answer
    x = 105,610.80

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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.