Home / 129,832.78-179,137.68-76,107.41

Finding the Fourth Proportional to 129,832.78, 179,137.68 and 76,107.41

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Solution

The fourth proportional to 129,832.78, 179,137.68 and 76,107.41 is: 105,009.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,832.78 : 179,137.68 = 76,107.41 : x
  2. Step 2: Convert to fraction form
    129,832.78/179,137.68 = 76,107.41/x
  3. Step 3: Cross multiply
    129,832.78x = 179,137.68 × 76,107.41
  4. Step 4: Simplify right side
    129,832.78x = 13,633,704,858.21
  5. Step 5: Solve for x
    x = 13,633,704,858.21/129,832.78
  6. Step 6: Final answer
    x = 105,009.73

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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.