Home / 129,780.96-179,081.46-76,053.66

Finding the Fourth Proportional to 129,780.96, 179,081.46 and 76,053.66

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Solution

The fourth proportional to 129,780.96, 179,081.46 and 76,053.66 is: 104,944.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,780.96 : 179,081.46 = 76,053.66 : x
  2. Step 2: Convert to fraction form
    129,780.96/179,081.46 = 76,053.66/x
  3. Step 3: Cross multiply
    129,780.96x = 179,081.46 × 76,053.66
  4. Step 4: Simplify right side
    129,780.96x = 13,619,800,471.14
  5. Step 5: Solve for x
    x = 13,619,800,471.14/129,780.96
  6. Step 6: Final answer
    x = 104,944.52

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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.