Home / 212,922.20-319,370.69-79,791.32

Finding the Fourth Proportional to 212,922.20, 319,370.69 and 79,791.32

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Solution

The fourth proportional to 212,922.20, 319,370.69 and 79,791.32 is: 119,682.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,922.20 : 319,370.69 = 79,791.32 : x
  2. Step 2: Convert to fraction form
    212,922.20/319,370.69 = 79,791.32/x
  3. Step 3: Cross multiply
    212,922.20x = 319,370.69 × 79,791.32
  4. Step 4: Simplify right side
    212,922.20x = 25,483,006,928.60
  5. Step 5: Solve for x
    x = 25,483,006,928.60/212,922.20
  6. Step 6: Final answer
    x = 119,682.25

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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.