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Finding the Fourth Proportional to 101,481.90, 140,101.32 and 61,205.82

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Solution

The fourth proportional to 101,481.90, 140,101.32 and 61,205.82 is: 84,497.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,481.90 : 140,101.32 = 61,205.82 : x
  2. Step 2: Convert to fraction form
    101,481.90/140,101.32 = 61,205.82/x
  3. Step 3: Cross multiply
    101,481.90x = 140,101.32 × 61,205.82
  4. Step 4: Simplify right side
    101,481.90x = 8,575,016,173.68
  5. Step 5: Solve for x
    x = 8,575,016,173.68/101,481.90
  6. Step 6: Final answer
    x = 84,497.99

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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.