Home / 207,290.20-311,012.10-82,720.60

Finding the Fourth Proportional to 207,290.20, 311,012.10 and 82,720.60

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Solution

The fourth proportional to 207,290.20, 311,012.10 and 82,720.60 is: 124,111.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,290.20 : 311,012.10 = 82,720.60 : x
  2. Step 2: Convert to fraction form
    207,290.20/311,012.10 = 82,720.60/x
  3. Step 3: Cross multiply
    207,290.20x = 311,012.10 × 82,720.60
  4. Step 4: Simplify right side
    207,290.20x = 25,727,107,519.26
  5. Step 5: Solve for x
    x = 25,727,107,519.26/207,290.20
  6. Step 6: Final answer
    x = 124,111.55

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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.