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Finding the Fourth Proportional to 123,887.32, 170,956 and 67,297.48

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Solution

The fourth proportional to 123,887.32, 170,956 and 67,297.48 is: 92,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,887.32 : 170,956 = 67,297.48 : x
  2. Step 2: Convert to fraction form
    123,887.32/170,956 = 67,297.48/x
  3. Step 3: Cross multiply
    123,887.32x = 170,956 × 67,297.48
  4. Step 4: Simplify right side
    123,887.32x = 11,504,907,990.88
  5. Step 5: Solve for x
    x = 11,504,907,990.88/123,887.32
  6. Step 6: Final answer
    x = 92,865.90

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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.