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Finding the Fourth Proportional to 121,769.80, 182,654.70 and 102,524.20

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Solution

The fourth proportional to 121,769.80, 182,654.70 and 102,524.20 is: 153,786.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,769.80 : 182,654.70 = 102,524.20 : x
  2. Step 2: Convert to fraction form
    121,769.80/182,654.70 = 102,524.20/x
  3. Step 3: Cross multiply
    121,769.80x = 182,654.70 × 102,524.20
  4. Step 4: Simplify right side
    121,769.80x = 18,726,526,993.74
  5. Step 5: Solve for x
    x = 18,726,526,993.74/121,769.80
  6. Step 6: Final answer
    x = 153,786.30

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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.