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Finding the Fourth Proportional to 100,249.41, 138,343.62 and 54,927.21

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Solution

The fourth proportional to 100,249.41, 138,343.62 and 54,927.21 is: 75,799.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,249.41 : 138,343.62 = 54,927.21 : x
  2. Step 2: Convert to fraction form
    100,249.41/138,343.62 = 54,927.21/x
  3. Step 3: Cross multiply
    100,249.41x = 138,343.62 × 54,927.21
  4. Step 4: Simplify right side
    100,249.41x = 7,598,829,067.90
  5. Step 5: Solve for x
    x = 7,598,829,067.90/100,249.41
  6. Step 6: Final answer
    x = 75,799.24

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1.5x scale

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.