Home / 212,359.73-318,256.49-79,105.82

Finding the Fourth Proportional to 212,359.73, 318,256.49 and 79,105.82

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Solution

The fourth proportional to 212,359.73, 318,256.49 and 79,105.82 is: 118,553.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,359.73 : 318,256.49 = 79,105.82 : x
  2. Step 2: Convert to fraction form
    212,359.73/318,256.49 = 79,105.82/x
  3. Step 3: Cross multiply
    212,359.73x = 318,256.49 × 79,105.82
  4. Step 4: Simplify right side
    212,359.73x = 25,175,939,218.25
  5. Step 5: Solve for x
    x = 25,175,939,218.25/212,359.73
  6. Step 6: Final answer
    x = 118,553.27

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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.