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Finding the Fourth Proportional to 138,662.34, 207,910.08 and 67,444.44

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Solution

The fourth proportional to 138,662.34, 207,910.08 and 67,444.44 is: 101,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,662.34 : 207,910.08 = 67,444.44 : x
  2. Step 2: Convert to fraction form
    138,662.34/207,910.08 = 67,444.44/x
  3. Step 3: Cross multiply
    138,662.34x = 207,910.08 × 67,444.44
  4. Step 4: Simplify right side
    138,662.34x = 14,022,378,915.96
  5. Step 5: Solve for x
    x = 14,022,378,915.96/138,662.34
  6. Step 6: Final answer
    x = 101,126.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.