Home / 149,067.38-205,781.10-100,091

Finding the Fourth Proportional to 149,067.38, 205,781.10 and 100,091

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Solution

The fourth proportional to 149,067.38, 205,781.10 and 100,091 is: 138,171.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,067.38 : 205,781.10 = 100,091 : x
  2. Step 2: Convert to fraction form
    149,067.38/205,781.10 = 100,091/x
  3. Step 3: Cross multiply
    149,067.38x = 205,781.10 × 100,091
  4. Step 4: Simplify right side
    149,067.38x = 20,596,836,080.10
  5. Step 5: Solve for x
    x = 20,596,836,080.10/149,067.38
  6. Step 6: Final answer
    x = 138,171.32

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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.