Home / 212,238.72-318,180.96-79,044.48

Finding the Fourth Proportional to 212,238.72, 318,180.96 and 79,044.48

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Solution

The fourth proportional to 212,238.72, 318,180.96 and 79,044.48 is: 118,500.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,238.72 : 318,180.96 = 79,044.48 : x
  2. Step 2: Convert to fraction form
    212,238.72/318,180.96 = 79,044.48/x
  3. Step 3: Cross multiply
    212,238.72x = 318,180.96 × 79,044.48
  4. Step 4: Simplify right side
    212,238.72x = 25,150,448,529.10
  5. Step 5: Solve for x
    x = 25,150,448,529.10/212,238.72
  6. Step 6: Final answer
    x = 118,500.75

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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.