Home / 212,452.62-318,445.65-72,105.54

Finding the Fourth Proportional to 212,452.62, 318,445.65 and 72,105.54

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Solution

The fourth proportional to 212,452.62, 318,445.65 and 72,105.54 is: 108,079.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,452.62 : 318,445.65 = 72,105.54 : x
  2. Step 2: Convert to fraction form
    212,452.62/318,445.65 = 72,105.54/x
  3. Step 3: Cross multiply
    212,452.62x = 318,445.65 × 72,105.54
  4. Step 4: Simplify right side
    212,452.62x = 22,961,695,553.90
  5. Step 5: Solve for x
    x = 22,961,695,553.90/212,452.62
  6. Step 6: Final answer
    x = 108,079.14

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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.