Home / 140,721.30-211,067.19-74,134.62

Finding the Fourth Proportional to 140,721.30, 211,067.19 and 74,134.62

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Solution

The fourth proportional to 140,721.30, 211,067.19 and 74,134.62 is: 111,194.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,721.30 : 211,067.19 = 74,134.62 : x
  2. Step 2: Convert to fraction form
    140,721.30/211,067.19 = 74,134.62/x
  3. Step 3: Cross multiply
    140,721.30x = 211,067.19 × 74,134.62
  4. Step 4: Simplify right side
    140,721.30x = 15,647,385,925.12
  5. Step 5: Solve for x
    x = 15,647,385,925.12/140,721.30
  6. Step 6: Final answer
    x = 111,194.15

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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.