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Finding the Fourth Proportional to 128,583.56, 192,906.12 and 53,662.04

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Solution

The fourth proportional to 128,583.56, 192,906.12 and 53,662.04 is: 80,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,583.56 : 192,906.12 = 53,662.04 : x
  2. Step 2: Convert to fraction form
    128,583.56/192,906.12 = 53,662.04/x
  3. Step 3: Cross multiply
    128,583.56x = 192,906.12 × 53,662.04
  4. Step 4: Simplify right side
    128,583.56x = 10,351,735,927.68
  5. Step 5: Solve for x
    x = 10,351,735,927.68/128,583.56
  6. Step 6: Final answer
    x = 80,505.91

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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.