Home / 129,744.26-179,016.55-78,755.74

Finding the Fourth Proportional to 129,744.26, 179,016.55 and 78,755.74

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Solution

The fourth proportional to 129,744.26, 179,016.55 and 78,755.74 is: 108,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,744.26 : 179,016.55 = 78,755.74 : x
  2. Step 2: Convert to fraction form
    129,744.26/179,016.55 = 78,755.74/x
  3. Step 3: Cross multiply
    129,744.26x = 179,016.55 × 78,755.74
  4. Step 4: Simplify right side
    129,744.26x = 14,098,580,223.07
  5. Step 5: Solve for x
    x = 14,098,580,223.07/129,744.26
  6. Step 6: Final answer
    x = 108,664.39

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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.