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Finding the Fourth Proportional to 133,620.60, 200,625.30 and 81,132.60

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Solution

The fourth proportional to 133,620.60, 200,625.30 and 81,132.60 is: 121,816.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,620.60 : 200,625.30 = 81,132.60 : x
  2. Step 2: Convert to fraction form
    133,620.60/200,625.30 = 81,132.60/x
  3. Step 3: Cross multiply
    133,620.60x = 200,625.30 × 81,132.60
  4. Step 4: Simplify right side
    133,620.60x = 16,277,252,214.78
  5. Step 5: Solve for x
    x = 16,277,252,214.78/133,620.60
  6. Step 6: Final answer
    x = 121,816.94

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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.