Home / 129,786.21-194,799.60-79,963.65

Finding the Fourth Proportional to 129,786.21, 194,799.60 and 79,963.65

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Solution

The fourth proportional to 129,786.21, 194,799.60 and 79,963.65 is: 120,019.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,786.21 : 194,799.60 = 79,963.65 : x
  2. Step 2: Convert to fraction form
    129,786.21/194,799.60 = 79,963.65/x
  3. Step 3: Cross multiply
    129,786.21x = 194,799.60 × 79,963.65
  4. Step 4: Simplify right side
    129,786.21x = 15,576,887,034.54
  5. Step 5: Solve for x
    x = 15,576,887,034.54/129,786.21
  6. Step 6: Final answer
    x = 120,019.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.