Home / 135,559.76-187,067.38-75,131.43

Finding the Fourth Proportional to 135,559.76, 187,067.38 and 75,131.43

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Solution

The fourth proportional to 135,559.76, 187,067.38 and 75,131.43 is: 103,678.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,559.76 : 187,067.38 = 75,131.43 : x
  2. Step 2: Convert to fraction form
    135,559.76/187,067.38 = 75,131.43/x
  3. Step 3: Cross multiply
    135,559.76x = 187,067.38 × 75,131.43
  4. Step 4: Simplify right side
    135,559.76x = 14,054,639,390.10
  5. Step 5: Solve for x
    x = 14,054,639,390.10/135,559.76
  6. Step 6: Final answer
    x = 103,678.55

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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.