Home / 129,736.62-179,053.74-76,042.80

Finding the Fourth Proportional to 129,736.62, 179,053.74 and 76,042.80

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Solution

The fourth proportional to 129,736.62, 179,053.74 and 76,042.80 is: 104,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,736.62 : 179,053.74 = 76,042.80 : x
  2. Step 2: Convert to fraction form
    129,736.62/179,053.74 = 76,042.80/x
  3. Step 3: Cross multiply
    129,736.62x = 179,053.74 × 76,042.80
  4. Step 4: Simplify right side
    129,736.62x = 13,615,747,740.07
  5. Step 5: Solve for x
    x = 13,615,747,740.07/129,736.62
  6. Step 6: Final answer
    x = 104,949.15

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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.