Home / 129,652.18-178,930.53-73,067.38

Finding the Fourth Proportional to 129,652.18, 178,930.53 and 73,067.38

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Solution

The fourth proportional to 129,652.18, 178,930.53 and 73,067.38 is: 100,838.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,652.18 : 178,930.53 = 73,067.38 : x
  2. Step 2: Convert to fraction form
    129,652.18/178,930.53 = 73,067.38/x
  3. Step 3: Cross multiply
    129,652.18x = 178,930.53 × 73,067.38
  4. Step 4: Simplify right side
    129,652.18x = 13,073,985,029.11
  5. Step 5: Solve for x
    x = 13,073,985,029.11/129,652.18
  6. Step 6: Final answer
    x = 100,838.91

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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.