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Finding the Fourth Proportional to 101,297.78, 151,853.78 and 38,921.30

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Solution

The fourth proportional to 101,297.78, 151,853.78 and 38,921.30 is: 58,346.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,297.78 : 151,853.78 = 38,921.30 : x
  2. Step 2: Convert to fraction form
    101,297.78/151,853.78 = 38,921.30/x
  3. Step 3: Cross multiply
    101,297.78x = 151,853.78 × 38,921.30
  4. Step 4: Simplify right side
    101,297.78x = 5,910,345,865.55
  5. Step 5: Solve for x
    x = 5,910,345,865.55/101,297.78
  6. Step 6: Final answer
    x = 58,346.26

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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.