Home / 258,067.32-386,953.38-100,111.38

Finding the Fourth Proportional to 258,067.32, 386,953.38 and 100,111.38

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Solution

The fourth proportional to 258,067.32, 386,953.38 and 100,111.38 is: 150,109.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,067.32 : 386,953.38 = 100,111.38 : x
  2. Step 2: Convert to fraction form
    258,067.32/386,953.38 = 100,111.38/x
  3. Step 3: Cross multiply
    258,067.32x = 386,953.38 × 100,111.38
  4. Step 4: Simplify right side
    258,067.32x = 38,738,436,867.46
  5. Step 5: Solve for x
    x = 38,738,436,867.46/258,067.32
  6. Step 6: Final answer
    x = 150,109.81

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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.