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Finding the Fourth Proportional to 139,203.01, 192,100.27 and 75,540.80

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Solution

The fourth proportional to 139,203.01, 192,100.27 and 75,540.80 is: 104,246.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,203.01 : 192,100.27 = 75,540.80 : x
  2. Step 2: Convert to fraction form
    139,203.01/192,100.27 = 75,540.80/x
  3. Step 3: Cross multiply
    139,203.01x = 192,100.27 × 75,540.80
  4. Step 4: Simplify right side
    139,203.01x = 14,511,408,615.28
  5. Step 5: Solve for x
    x = 14,511,408,615.28/139,203.01
  6. Step 6: Final answer
    x = 104,246.37

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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.