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Finding the Fourth Proportional to 133,247.64, 199,772.64 and 80,644.80

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Solution

The fourth proportional to 133,247.64, 199,772.64 and 80,644.80 is: 120,907.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,247.64 : 199,772.64 = 80,644.80 : x
  2. Step 2: Convert to fraction form
    133,247.64/199,772.64 = 80,644.80/x
  3. Step 3: Cross multiply
    133,247.64x = 199,772.64 × 80,644.80
  4. Step 4: Simplify right side
    133,247.64x = 16,110,624,598.27
  5. Step 5: Solve for x
    x = 16,110,624,598.27/133,247.64
  6. Step 6: Final answer
    x = 120,907.39

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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.