Home / 135,786.72-187,380.12-75,359.88

Finding the Fourth Proportional to 135,786.72, 187,380.12 and 75,359.88

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Solution

The fourth proportional to 135,786.72, 187,380.12 and 75,359.88 is: 103,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,786.72 : 187,380.12 = 75,359.88 : x
  2. Step 2: Convert to fraction form
    135,786.72/187,380.12 = 75,359.88/x
  3. Step 3: Cross multiply
    135,786.72x = 187,380.12 × 75,359.88
  4. Step 4: Simplify right side
    135,786.72x = 14,120,943,357.59
  5. Step 5: Solve for x
    x = 14,120,943,357.59/135,786.72
  6. Step 6: Final answer
    x = 103,993.55

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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.