Home / 213,742.40-320,176.20-108,620.60

Finding the Fourth Proportional to 213,742.40, 320,176.20 and 108,620.60

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Solution

The fourth proportional to 213,742.40, 320,176.20 and 108,620.60 is: 162,708.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,742.40 : 320,176.20 = 108,620.60 : x
  2. Step 2: Convert to fraction form
    213,742.40/320,176.20 = 108,620.60/x
  3. Step 3: Cross multiply
    213,742.40x = 320,176.20 × 108,620.60
  4. Step 4: Simplify right side
    213,742.40x = 34,777,730,949.72
  5. Step 5: Solve for x
    x = 34,777,730,949.72/213,742.40
  6. Step 6: Final answer
    x = 162,708.62

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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.