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Finding the Fourth Proportional to 121,029.64, 166,997 and 73,287.44

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Solution

The fourth proportional to 121,029.64, 166,997 and 73,287.44 is: 101,122.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,029.64 : 166,997 = 73,287.44 : x
  2. Step 2: Convert to fraction form
    121,029.64/166,997 = 73,287.44/x
  3. Step 3: Cross multiply
    121,029.64x = 166,997 × 73,287.44
  4. Step 4: Simplify right side
    121,029.64x = 12,238,782,617.68
  5. Step 5: Solve for x
    x = 12,238,782,617.68/121,029.64
  6. Step 6: Final answer
    x = 101,122.19

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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.