Home / 207,942.60-311,760.30-83,219.40

Finding the Fourth Proportional to 207,942.60, 311,760.30 and 83,219.40

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Solution

The fourth proportional to 207,942.60, 311,760.30 and 83,219.40 is: 124,767.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,942.60 : 311,760.30 = 83,219.40 : x
  2. Step 2: Convert to fraction form
    207,942.60/311,760.30 = 83,219.40/x
  3. Step 3: Cross multiply
    207,942.60x = 311,760.30 × 83,219.40
  4. Step 4: Simplify right side
    207,942.60x = 25,944,505,109.82
  5. Step 5: Solve for x
    x = 25,944,505,109.82/207,942.60
  6. Step 6: Final answer
    x = 124,767.63

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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.