Home / 212,067.20-317,938.80-106,961.60

Finding the Fourth Proportional to 212,067.20, 317,938.80 and 106,961.60

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Solution

The fourth proportional to 212,067.20, 317,938.80 and 106,961.60 is: 160,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,067.20 : 317,938.80 = 106,961.60 : x
  2. Step 2: Convert to fraction form
    212,067.20/317,938.80 = 106,961.60/x
  3. Step 3: Cross multiply
    212,067.20x = 317,938.80 × 106,961.60
  4. Step 4: Simplify right side
    212,067.20x = 34,007,242,750.08
  5. Step 5: Solve for x
    x = 34,007,242,750.08/212,067.20
  6. Step 6: Final answer
    x = 160,360.69

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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.