Home / 207,266.20-311,081.55-122,920.90

Finding the Fourth Proportional to 207,266.20, 311,081.55 and 122,920.90

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Solution

The fourth proportional to 207,266.20, 311,081.55 and 122,920.90 is: 184,489.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,266.20 : 311,081.55 = 122,920.90 : x
  2. Step 2: Convert to fraction form
    207,266.20/311,081.55 = 122,920.90/x
  3. Step 3: Cross multiply
    207,266.20x = 311,081.55 × 122,920.90
  4. Step 4: Simplify right side
    207,266.20x = 38,238,424,099.40
  5. Step 5: Solve for x
    x = 38,238,424,099.40/207,266.20
  6. Step 6: Final answer
    x = 184,489.43

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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.