Home / 126,761.65-175,049.62-81,518.21

Finding the Fourth Proportional to 126,761.65, 175,049.62 and 81,518.21

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Solution

The fourth proportional to 126,761.65, 175,049.62 and 81,518.21 is: 112,571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,761.65 : 175,049.62 = 81,518.21 : x
  2. Step 2: Convert to fraction form
    126,761.65/175,049.62 = 81,518.21/x
  3. Step 3: Cross multiply
    126,761.65x = 175,049.62 × 81,518.21
  4. Step 4: Simplify right side
    126,761.65x = 14,269,730,604.54
  5. Step 5: Solve for x
    x = 14,269,730,604.54/126,761.65
  6. Step 6: Final answer
    x = 112,571.36

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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.