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Finding the Fourth Proportional to 155,286.80, 232,728.60 and 72,003.60

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Solution

The fourth proportional to 155,286.80, 232,728.60 and 72,003.60 is: 107,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,286.80 : 232,728.60 = 72,003.60 : x
  2. Step 2: Convert to fraction form
    155,286.80/232,728.60 = 72,003.60/x
  3. Step 3: Cross multiply
    155,286.80x = 232,728.60 × 72,003.60
  4. Step 4: Simplify right side
    155,286.80x = 16,757,297,022.96
  5. Step 5: Solve for x
    x = 16,757,297,022.96/155,286.80
  6. Step 6: Final answer
    x = 107,911.92

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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.