Home / 146,719.20-219,819.60-120,280.80

Finding the Fourth Proportional to 146,719.20, 219,819.60 and 120,280.80

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Solution

The fourth proportional to 146,719.20, 219,819.60 and 120,280.80 is: 180,208.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,719.20 : 219,819.60 = 120,280.80 : x
  2. Step 2: Convert to fraction form
    146,719.20/219,819.60 = 120,280.80/x
  3. Step 3: Cross multiply
    146,719.20x = 219,819.60 × 120,280.80
  4. Step 4: Simplify right side
    146,719.20x = 26,440,077,343.68
  5. Step 5: Solve for x
    x = 26,440,077,343.68/146,719.20
  6. Step 6: Final answer
    x = 180,208.71

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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.