Home / 213,187.20-319,612.10-80,052.64

Finding the Fourth Proportional to 213,187.20, 319,612.10 and 80,052.64

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Solution

The fourth proportional to 213,187.20, 319,612.10 and 80,052.64 is: 120,015.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,187.20 : 319,612.10 = 80,052.64 : x
  2. Step 2: Convert to fraction form
    213,187.20/319,612.10 = 80,052.64/x
  3. Step 3: Cross multiply
    213,187.20x = 319,612.10 × 80,052.64
  4. Step 4: Simplify right side
    213,187.20x = 25,585,792,380.94
  5. Step 5: Solve for x
    x = 25,585,792,380.94/213,187.20
  6. Step 6: Final answer
    x = 120,015.61

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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.