Home / 212,136.88-318,238.06-132,113.60

Finding the Fourth Proportional to 212,136.88, 318,238.06 and 132,113.60

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Solution

The fourth proportional to 212,136.88, 318,238.06 and 132,113.60 is: 198,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,136.88 : 318,238.06 = 132,113.60 : x
  2. Step 2: Convert to fraction form
    212,136.88/318,238.06 = 132,113.60/x
  3. Step 3: Cross multiply
    212,136.88x = 318,238.06 × 132,113.60
  4. Step 4: Simplify right side
    212,136.88x = 42,043,575,763.62
  5. Step 5: Solve for x
    x = 42,043,575,763.62/212,136.88
  6. Step 6: Final answer
    x = 198,190.79

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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.