Home / 129,175.20-193,417.20-82,173.60

Finding the Fourth Proportional to 129,175.20, 193,417.20 and 82,173.60

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Solution

The fourth proportional to 129,175.20, 193,417.20 and 82,173.60 is: 123,040.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,175.20 : 193,417.20 = 82,173.60 : x
  2. Step 2: Convert to fraction form
    129,175.20/193,417.20 = 82,173.60/x
  3. Step 3: Cross multiply
    129,175.20x = 193,417.20 × 82,173.60
  4. Step 4: Simplify right side
    129,175.20x = 15,893,787,625.92
  5. Step 5: Solve for x
    x = 15,893,787,625.92/129,175.20
  6. Step 6: Final answer
    x = 123,040.55

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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.