Home / 129,756.62-179,081.34-76,062.80

Finding the Fourth Proportional to 129,756.62, 179,081.34 and 76,062.80

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Solution

The fourth proportional to 129,756.62, 179,081.34 and 76,062.80 is: 104,976.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,756.62 : 179,081.34 = 76,062.80 : x
  2. Step 2: Convert to fraction form
    129,756.62/179,081.34 = 76,062.80/x
  3. Step 3: Cross multiply
    129,756.62x = 179,081.34 × 76,062.80
  4. Step 4: Simplify right side
    129,756.62x = 13,621,428,148.15
  5. Step 5: Solve for x
    x = 13,621,428,148.15/129,756.62
  6. Step 6: Final answer
    x = 104,976.75

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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.