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Finding the Fourth Proportional to 174,680.40, 261,793.80 and 80,986.80

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Solution

The fourth proportional to 174,680.40, 261,793.80 and 80,986.80 is: 121,375.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,680.40 : 261,793.80 = 80,986.80 : x
  2. Step 2: Convert to fraction form
    174,680.40/261,793.80 = 80,986.80/x
  3. Step 3: Cross multiply
    174,680.40x = 261,793.80 × 80,986.80
  4. Step 4: Simplify right side
    174,680.40x = 21,201,842,121.84
  5. Step 5: Solve for x
    x = 21,201,842,121.84/174,680.40
  6. Step 6: Final answer
    x = 121,375.05

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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.