Home / 129,476.88-194,179.14-82,021.41

Finding the Fourth Proportional to 129,476.88, 194,179.14 and 82,021.41

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Solution

The fourth proportional to 129,476.88, 194,179.14 and 82,021.41 is: 123,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,476.88 : 194,179.14 = 82,021.41 : x
  2. Step 2: Convert to fraction form
    129,476.88/194,179.14 = 82,021.41/x
  3. Step 3: Cross multiply
    129,476.88x = 194,179.14 × 82,021.41
  4. Step 4: Simplify right side
    129,476.88x = 15,926,846,855.39
  5. Step 5: Solve for x
    x = 15,926,846,855.39/129,476.88
  6. Step 6: Final answer
    x = 123,009.20

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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.