Home / 207,723.60-311,569.20-81,339.30

Finding the Fourth Proportional to 207,723.60, 311,569.20 and 81,339.30

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Solution

The fourth proportional to 207,723.60, 311,569.20 and 81,339.30 is: 122,002.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,723.60 : 311,569.20 = 81,339.30 : x
  2. Step 2: Convert to fraction form
    207,723.60/311,569.20 = 81,339.30/x
  3. Step 3: Cross multiply
    207,723.60x = 311,569.20 × 81,339.30
  4. Step 4: Simplify right side
    207,723.60x = 25,342,820,629.56
  5. Step 5: Solve for x
    x = 25,342,820,629.56/207,723.60
  6. Step 6: Final answer
    x = 122,002.61

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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.