Home / 129,934.08-179,259.24-78,928.68

Finding the Fourth Proportional to 129,934.08, 179,259.24 and 78,928.68

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Solution

The fourth proportional to 129,934.08, 179,259.24 and 78,928.68 is: 108,891.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,934.08 : 179,259.24 = 78,928.68 : x
  2. Step 2: Convert to fraction form
    129,934.08/179,259.24 = 78,928.68/x
  3. Step 3: Cross multiply
    129,934.08x = 179,259.24 × 78,928.68
  4. Step 4: Simplify right side
    129,934.08x = 14,148,695,191.00
  5. Step 5: Solve for x
    x = 14,148,695,191.00/129,934.08
  6. Step 6: Final answer
    x = 108,891.33

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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.