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Finding the Fourth Proportional to 101,249.10, 138,509.48 and 100,822.64

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Solution

The fourth proportional to 101,249.10, 138,509.48 and 100,822.64 is: 137,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,249.10 : 138,509.48 = 100,822.64 : x
  2. Step 2: Convert to fraction form
    101,249.10/138,509.48 = 100,822.64/x
  3. Step 3: Cross multiply
    101,249.10x = 138,509.48 × 100,822.64
  4. Step 4: Simplify right side
    101,249.10x = 13,964,890,241.97
  5. Step 5: Solve for x
    x = 13,964,890,241.97/101,249.10
  6. Step 6: Final answer
    x = 137,926.07

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.