Home / 212,581.72-318,911.82-87,932.44

Finding the Fourth Proportional to 212,581.72, 318,911.82 and 87,932.44

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Solution

The fourth proportional to 212,581.72, 318,911.82 and 87,932.44 is: 131,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,581.72 : 318,911.82 = 87,932.44 : x
  2. Step 2: Convert to fraction form
    212,581.72/318,911.82 = 87,932.44/x
  3. Step 3: Cross multiply
    212,581.72x = 318,911.82 × 87,932.44
  4. Step 4: Simplify right side
    212,581.72x = 28,042,694,477.44
  5. Step 5: Solve for x
    x = 28,042,694,477.44/212,581.72
  6. Step 6: Final answer
    x = 131,914.89

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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.