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Finding the Fourth Proportional to 120,375.57, 180,592.56 and 36,135.57

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Solution

The fourth proportional to 120,375.57, 180,592.56 and 36,135.57 is: 54,212.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,375.57 : 180,592.56 = 36,135.57 : x
  2. Step 2: Convert to fraction form
    120,375.57/180,592.56 = 36,135.57/x
  3. Step 3: Cross multiply
    120,375.57x = 180,592.56 × 36,135.57
  4. Step 4: Simplify right side
    120,375.57x = 6,525,815,093.36
  5. Step 5: Solve for x
    x = 6,525,815,093.36/120,375.57
  6. Step 6: Final answer
    x = 54,212.12

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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.