Home / 149,709.12-206,640.28-86,067.42

Finding the Fourth Proportional to 149,709.12, 206,640.28 and 86,067.42

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Solution

The fourth proportional to 149,709.12, 206,640.28 and 86,067.42 is: 118,797.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,709.12 : 206,640.28 = 86,067.42 : x
  2. Step 2: Convert to fraction form
    149,709.12/206,640.28 = 86,067.42/x
  3. Step 3: Cross multiply
    149,709.12x = 206,640.28 × 86,067.42
  4. Step 4: Simplify right side
    149,709.12x = 17,784,995,767.68
  5. Step 5: Solve for x
    x = 17,784,995,767.68/149,709.12
  6. Step 6: Final answer
    x = 118,797.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.