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Finding the Fourth Proportional to 177,769.60, 266,557.20 and 72,469.60

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Solution

The fourth proportional to 177,769.60, 266,557.20 and 72,469.60 is: 108,664.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,769.60 : 266,557.20 = 72,469.60 : x
  2. Step 2: Convert to fraction form
    177,769.60/266,557.20 = 72,469.60/x
  3. Step 3: Cross multiply
    177,769.60x = 266,557.20 × 72,469.60
  4. Step 4: Simplify right side
    177,769.60x = 19,317,293,661.12
  5. Step 5: Solve for x
    x = 19,317,293,661.12/177,769.60
  6. Step 6: Final answer
    x = 108,664.78

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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.