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Finding the Fourth Proportional to 166,000, 229,080.73 and 90,550.12

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Solution

The fourth proportional to 166,000, 229,080.73 and 90,550.12 is: 124,959.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,000 : 229,080.73 = 90,550.12 : x
  2. Step 2: Convert to fraction form
    166,000/229,080.73 = 90,550.12/x
  3. Step 3: Cross multiply
    166,000x = 229,080.73 × 90,550.12
  4. Step 4: Simplify right side
    166,000x = 20,743,287,591.19
  5. Step 5: Solve for x
    x = 20,743,287,591.19/166,000
  6. Step 6: Final answer
    x = 124,959.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.