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Finding the Fourth Proportional to 121,027.20, 181,540.80 and 61,843.20

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Solution

The fourth proportional to 121,027.20, 181,540.80 and 61,843.20 is: 92,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,027.20 : 181,540.80 = 61,843.20 : x
  2. Step 2: Convert to fraction form
    121,027.20/181,540.80 = 61,843.20/x
  3. Step 3: Cross multiply
    121,027.20x = 181,540.80 × 61,843.20
  4. Step 4: Simplify right side
    121,027.20x = 11,227,064,002.56
  5. Step 5: Solve for x
    x = 11,227,064,002.56/121,027.20
  6. Step 6: Final answer
    x = 92,764.80

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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.