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Finding the Fourth Proportional to 166,791.13, 230,171.42 and 90,310.30

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Solution

The fourth proportional to 166,791.13, 230,171.42 and 90,310.30 is: 124,628.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,791.13 : 230,171.42 = 90,310.30 : x
  2. Step 2: Convert to fraction form
    166,791.13/230,171.42 = 90,310.30/x
  3. Step 3: Cross multiply
    166,791.13x = 230,171.42 × 90,310.30
  4. Step 4: Simplify right side
    166,791.13x = 20,786,849,641.97
  5. Step 5: Solve for x
    x = 20,786,849,641.97/166,791.13
  6. Step 6: Final answer
    x = 124,628.03

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1.5x scale

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.