Home / 129,934.68-179,322.49-78,936.27

Finding the Fourth Proportional to 129,934.68, 179,322.49 and 78,936.27

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Solution

The fourth proportional to 129,934.68, 179,322.49 and 78,936.27 is: 108,939.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,934.68 : 179,322.49 = 78,936.27 : x
  2. Step 2: Convert to fraction form
    129,934.68/179,322.49 = 78,936.27/x
  3. Step 3: Cross multiply
    129,934.68x = 179,322.49 × 78,936.27
  4. Step 4: Simplify right side
    129,934.68x = 14,155,048,487.71
  5. Step 5: Solve for x
    x = 14,155,048,487.71/129,934.68
  6. Step 6: Final answer
    x = 108,939.73

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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.