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Finding the Fourth Proportional to 168,020.10, 252,074.70 and 73,209.60

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Solution

The fourth proportional to 168,020.10, 252,074.70 and 73,209.60 is: 109,833.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,020.10 : 252,074.70 = 73,209.60 : x
  2. Step 2: Convert to fraction form
    168,020.10/252,074.70 = 73,209.60/x
  3. Step 3: Cross multiply
    168,020.10x = 252,074.70 × 73,209.60
  4. Step 4: Simplify right side
    168,020.10x = 18,454,287,957.12
  5. Step 5: Solve for x
    x = 18,454,287,957.12/168,020.10
  6. Step 6: Final answer
    x = 109,833.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.