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Finding the Fourth Proportional to 178,998.60, 269,081.10 and 126,769.80

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Solution

The fourth proportional to 178,998.60, 269,081.10 and 126,769.80 is: 190,567.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,998.60 : 269,081.10 = 126,769.80 : x
  2. Step 2: Convert to fraction form
    178,998.60/269,081.10 = 126,769.80/x
  3. Step 3: Cross multiply
    178,998.60x = 269,081.10 × 126,769.80
  4. Step 4: Simplify right side
    178,998.60x = 34,111,357,230.78
  5. Step 5: Solve for x
    x = 34,111,357,230.78/178,998.60
  6. Step 6: Final answer
    x = 190,567.73

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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.