Home / 213,540.75-320,504.31-113,785.20

Finding the Fourth Proportional to 213,540.75, 320,504.31 and 113,785.20

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Solution

The fourth proportional to 213,540.75, 320,504.31 and 113,785.20 is: 170,780.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,540.75 : 320,504.31 = 113,785.20 : x
  2. Step 2: Convert to fraction form
    213,540.75/320,504.31 = 113,785.20/x
  3. Step 3: Cross multiply
    213,540.75x = 320,504.31 × 113,785.20
  4. Step 4: Simplify right side
    213,540.75x = 36,468,647,014.21
  5. Step 5: Solve for x
    x = 36,468,647,014.21/213,540.75
  6. Step 6: Final answer
    x = 170,780.74

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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.