Home / 212,082.34-318,115.20-71,840.96

Finding the Fourth Proportional to 212,082.34, 318,115.20 and 71,840.96

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Solution

The fourth proportional to 212,082.34, 318,115.20 and 71,840.96 is: 107,758.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,082.34 : 318,115.20 = 71,840.96 : x
  2. Step 2: Convert to fraction form
    212,082.34/318,115.20 = 71,840.96/x
  3. Step 3: Cross multiply
    212,082.34x = 318,115.20 × 71,840.96
  4. Step 4: Simplify right side
    212,082.34x = 22,853,701,358.59
  5. Step 5: Solve for x
    x = 22,853,701,358.59/212,082.34
  6. Step 6: Final answer
    x = 107,758.63

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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.