Home / 129,789.38-179,109.35-70,173.38

Finding the Fourth Proportional to 129,789.38, 179,109.35 and 70,173.38

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Solution

The fourth proportional to 129,789.38, 179,109.35 and 70,173.38 is: 96,839.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,789.38 : 179,109.35 = 70,173.38 : x
  2. Step 2: Convert to fraction form
    129,789.38/179,109.35 = 70,173.38/x
  3. Step 3: Cross multiply
    129,789.38x = 179,109.35 × 70,173.38
  4. Step 4: Simplify right side
    129,789.38x = 12,568,707,232.69
  5. Step 5: Solve for x
    x = 12,568,707,232.69/129,789.38
  6. Step 6: Final answer
    x = 96,839.26

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1.5x scale

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.