Home / 212,175.20-318,405.92-87,513.44

Finding the Fourth Proportional to 212,175.20, 318,405.92 and 87,513.44

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Solution

The fourth proportional to 212,175.20, 318,405.92 and 87,513.44 is: 131,329.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,175.20 : 318,405.92 = 87,513.44 : x
  2. Step 2: Convert to fraction form
    212,175.20/318,405.92 = 87,513.44/x
  3. Step 3: Cross multiply
    212,175.20x = 318,405.92 × 87,513.44
  4. Step 4: Simplify right side
    212,175.20x = 27,864,797,375.56
  5. Step 5: Solve for x
    x = 27,864,797,375.56/212,175.20
  6. Step 6: Final answer
    x = 131,329.19

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1.5x scale

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.