Home / 207,922.40-311,882.68-81,473.30

Finding the Fourth Proportional to 207,922.40, 311,882.68 and 81,473.30

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Solution

The fourth proportional to 207,922.40, 311,882.68 and 81,473.30 is: 122,209.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,922.40 : 311,882.68 = 81,473.30 : x
  2. Step 2: Convert to fraction form
    207,922.40/311,882.68 = 81,473.30/x
  3. Step 3: Cross multiply
    207,922.40x = 311,882.68 × 81,473.30
  4. Step 4: Simplify right side
    207,922.40x = 25,410,111,152.44
  5. Step 5: Solve for x
    x = 25,410,111,152.44/207,922.40
  6. Step 6: Final answer
    x = 122,209.59

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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.