Home / 136,078.08-187,791.60-82,372.80

Finding the Fourth Proportional to 136,078.08, 187,791.60 and 82,372.80

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Solution

The fourth proportional to 136,078.08, 187,791.60 and 82,372.80 is: 113,676.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,078.08 : 187,791.60 = 82,372.80 : x
  2. Step 2: Convert to fraction form
    136,078.08/187,791.60 = 82,372.80/x
  3. Step 3: Cross multiply
    136,078.08x = 187,791.60 × 82,372.80
  4. Step 4: Simplify right side
    136,078.08x = 15,468,919,908.48
  5. Step 5: Solve for x
    x = 15,468,919,908.48/136,078.08
  6. Step 6: Final answer
    x = 113,676.79

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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.