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Finding the Fourth Proportional to 120,028.42, 180,042.54 and 36,922.42

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Solution

The fourth proportional to 120,028.42, 180,042.54 and 36,922.42 is: 55,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,028.42 : 180,042.54 = 36,922.42 : x
  2. Step 2: Convert to fraction form
    120,028.42/180,042.54 = 36,922.42/x
  3. Step 3: Cross multiply
    120,028.42x = 180,042.54 × 36,922.42
  4. Step 4: Simplify right side
    120,028.42x = 6,647,606,279.75
  5. Step 5: Solve for x
    x = 6,647,606,279.75/120,028.42
  6. Step 6: Final answer
    x = 55,383.60

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1.5x scale

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.