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Finding the Fourth Proportional to 101,512.44, 140,070.60 and 63,759.96

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Solution

The fourth proportional to 101,512.44, 140,070.60 and 63,759.96 is: 87,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,512.44 : 140,070.60 = 63,759.96 : x
  2. Step 2: Convert to fraction form
    101,512.44/140,070.60 = 63,759.96/x
  3. Step 3: Cross multiply
    101,512.44x = 140,070.60 × 63,759.96
  4. Step 4: Simplify right side
    101,512.44x = 8,930,895,853.18
  5. Step 5: Solve for x
    x = 8,930,895,853.18/101,512.44
  6. Step 6: Final answer
    x = 87,978.34

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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.