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Finding the Fourth Proportional to 101,638.44, 140,244.48 and 63,885.96

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Solution

The fourth proportional to 101,638.44, 140,244.48 and 63,885.96 is: 88,152.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,638.44 : 140,244.48 = 63,885.96 : x
  2. Step 2: Convert to fraction form
    101,638.44/140,244.48 = 63,885.96/x
  3. Step 3: Cross multiply
    101,638.44x = 140,244.48 × 63,885.96
  4. Step 4: Simplify right side
    101,638.44x = 8,959,653,239.50
  5. Step 5: Solve for x
    x = 8,959,653,239.50/101,638.44
  6. Step 6: Final answer
    x = 88,152.21

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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.