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Finding the Fourth Proportional to 126,882.32, 175,018.32 and 81,619.25

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Solution

The fourth proportional to 126,882.32, 175,018.32 and 81,619.25 is: 112,583.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,882.32 : 175,018.32 = 81,619.25 : x
  2. Step 2: Convert to fraction form
    126,882.32/175,018.32 = 81,619.25/x
  3. Step 3: Cross multiply
    126,882.32x = 175,018.32 × 81,619.25
  4. Step 4: Simplify right side
    126,882.32x = 14,284,863,139.57
  5. Step 5: Solve for x
    x = 14,284,863,139.57/126,882.32
  6. Step 6: Final answer
    x = 112,583.56

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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.