Home / 135,629.38-187,177.97-75,205.61

Finding the Fourth Proportional to 135,629.38, 187,177.97 and 75,205.61

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Solution

The fourth proportional to 135,629.38, 187,177.97 and 75,205.61 is: 103,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,629.38 : 187,177.97 = 75,205.61 : x
  2. Step 2: Convert to fraction form
    135,629.38/187,177.97 = 75,205.61/x
  3. Step 3: Cross multiply
    135,629.38x = 187,177.97 × 75,205.61
  4. Step 4: Simplify right side
    135,629.38x = 14,076,832,100.49
  5. Step 5: Solve for x
    x = 14,076,832,100.49/135,629.38
  6. Step 6: Final answer
    x = 103,788.96

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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.