Home / 99,786.28-137,572.74-82,726.12

Finding the Fourth Proportional to 99,786.28, 137,572.74 and 82,726.12

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Solution

The fourth proportional to 99,786.28, 137,572.74 and 82,726.12 is: 114,052.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,786.28 : 137,572.74 = 82,726.12 : x
  2. Step 2: Convert to fraction form
    99,786.28/137,572.74 = 82,726.12/x
  3. Step 3: Cross multiply
    99,786.28x = 137,572.74 × 82,726.12
  4. Step 4: Simplify right side
    99,786.28x = 11,380,858,997.97
  5. Step 5: Solve for x
    x = 11,380,858,997.97/99,786.28
  6. Step 6: Final answer
    x = 114,052.34

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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.