Home / 100,067.62-138,110.25-57,618.34

Finding the Fourth Proportional to 100,067.62, 138,110.25 and 57,618.34

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Solution

The fourth proportional to 100,067.62, 138,110.25 and 57,618.34 is: 79,523.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,067.62 : 138,110.25 = 57,618.34 : x
  2. Step 2: Convert to fraction form
    100,067.62/138,110.25 = 57,618.34/x
  3. Step 3: Cross multiply
    100,067.62x = 138,110.25 × 57,618.34
  4. Step 4: Simplify right side
    100,067.62x = 7,957,683,341.99
  5. Step 5: Solve for x
    x = 7,957,683,341.99/100,067.62
  6. Step 6: Final answer
    x = 79,523.06

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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.