Home / 206,067.12-309,011.58-71,145.42

Finding the Fourth Proportional to 206,067.12, 309,011.58 and 71,145.42

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Solution

The fourth proportional to 206,067.12, 309,011.58 and 71,145.42 is: 106,687.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,067.12 : 309,011.58 = 71,145.42 : x
  2. Step 2: Convert to fraction form
    206,067.12/309,011.58 = 71,145.42/x
  3. Step 3: Cross multiply
    206,067.12x = 309,011.58 × 71,145.42
  4. Step 4: Simplify right side
    206,067.12x = 21,984,758,643.96
  5. Step 5: Solve for x
    x = 21,984,758,643.96/206,067.12
  6. Step 6: Final answer
    x = 106,687.37

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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.