Home / 129,785.25-179,103.65-70,169.25

Finding the Fourth Proportional to 129,785.25, 179,103.65 and 70,169.25

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Solution

The fourth proportional to 129,785.25, 179,103.65 and 70,169.25 is: 96,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,785.25 : 179,103.65 = 70,169.25 : x
  2. Step 2: Convert to fraction form
    129,785.25/179,103.65 = 70,169.25/x
  3. Step 3: Cross multiply
    129,785.25x = 179,103.65 × 70,169.25
  4. Step 4: Simplify right side
    129,785.25x = 12,567,568,441.92
  5. Step 5: Solve for x
    x = 12,567,568,441.92/129,785.25
  6. Step 6: Final answer
    x = 96,833.57

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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.