Home / 129,680.19-179,003.31-75,982.59

Finding the Fourth Proportional to 129,680.19, 179,003.31 and 75,982.59

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Solution

The fourth proportional to 129,680.19, 179,003.31 and 75,982.59 is: 104,882.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,680.19 : 179,003.31 = 75,982.59 : x
  2. Step 2: Convert to fraction form
    129,680.19/179,003.31 = 75,982.59/x
  3. Step 3: Cross multiply
    129,680.19x = 179,003.31 × 75,982.59
  4. Step 4: Simplify right side
    129,680.19x = 13,601,135,112.37
  5. Step 5: Solve for x
    x = 13,601,135,112.37/129,680.19
  6. Step 6: Final answer
    x = 104,882.13

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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.