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Finding the Fourth Proportional to 101,634.75, 140,255.96 and 61,890.75

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Solution

The fourth proportional to 101,634.75, 140,255.96 and 61,890.75 is: 85,409.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,634.75 : 140,255.96 = 61,890.75 : x
  2. Step 2: Convert to fraction form
    101,634.75/140,255.96 = 61,890.75/x
  3. Step 3: Cross multiply
    101,634.75x = 140,255.96 × 61,890.75
  4. Step 4: Simplify right side
    101,634.75x = 8,680,546,246.92
  5. Step 5: Solve for x
    x = 8,680,546,246.92/101,634.75
  6. Step 6: Final answer
    x = 85,409.24

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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.