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Finding the Fourth Proportional to 101,249.25, 139,731.60 and 58,241.89

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Solution

The fourth proportional to 101,249.25, 139,731.60 and 58,241.89 is: 80,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,249.25 : 139,731.60 = 58,241.89 : x
  2. Step 2: Convert to fraction form
    101,249.25/139,731.60 = 58,241.89/x
  3. Step 3: Cross multiply
    101,249.25x = 139,731.60 × 58,241.89
  4. Step 4: Simplify right side
    101,249.25x = 8,138,232,476.72
  5. Step 5: Solve for x
    x = 8,138,232,476.72/101,249.25
  6. Step 6: Final answer
    x = 80,378.20

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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.