Home / 129,760.38-179,069.94-76,045.77

Finding the Fourth Proportional to 129,760.38, 179,069.94 and 76,045.77

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Solution

The fourth proportional to 129,760.38, 179,069.94 and 76,045.77 is: 104,943.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,760.38 : 179,069.94 = 76,045.77 : x
  2. Step 2: Convert to fraction form
    129,760.38/179,069.94 = 76,045.77/x
  3. Step 3: Cross multiply
    129,760.38x = 179,069.94 × 76,045.77
  4. Step 4: Simplify right side
    129,760.38x = 13,617,511,471.15
  5. Step 5: Solve for x
    x = 13,617,511,471.15/129,760.38
  6. Step 6: Final answer
    x = 104,943.52

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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.