Home / 207,540.18-311,118.84-81,266.45

Finding the Fourth Proportional to 207,540.18, 311,118.84 and 81,266.45

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Solution

The fourth proportional to 207,540.18, 311,118.84 and 81,266.45 is: 121,824.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,540.18 : 311,118.84 = 81,266.45 : x
  2. Step 2: Convert to fraction form
    207,540.18/311,118.84 = 81,266.45/x
  3. Step 3: Cross multiply
    207,540.18x = 311,118.84 × 81,266.45
  4. Step 4: Simplify right side
    207,540.18x = 25,283,522,099.32
  5. Step 5: Solve for x
    x = 25,283,522,099.32/207,540.18
  6. Step 6: Final answer
    x = 121,824.71

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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.