Home / 212,135.88-318,236.56-132,112.60

Finding the Fourth Proportional to 212,135.88, 318,236.56 and 132,112.60

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Solution

The fourth proportional to 212,135.88, 318,236.56 and 132,112.60 is: 198,189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,135.88 : 318,236.56 = 132,112.60 : x
  2. Step 2: Convert to fraction form
    212,135.88/318,236.56 = 132,112.60/x
  3. Step 3: Cross multiply
    212,135.88x = 318,236.56 × 132,112.60
  4. Step 4: Simplify right side
    212,135.88x = 42,043,059,356.66
  5. Step 5: Solve for x
    x = 42,043,059,356.66/212,135.88
  6. Step 6: Final answer
    x = 198,189.29

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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.