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Finding the Fourth Proportional to 167,396.90, 231,009.39 and 90,917.49

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Solution

The fourth proportional to 167,396.90, 231,009.39 and 90,917.49 is: 125,467.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,396.90 : 231,009.39 = 90,917.49 : x
  2. Step 2: Convert to fraction form
    167,396.90/231,009.39 = 90,917.49/x
  3. Step 3: Cross multiply
    167,396.90x = 231,009.39 × 90,917.49
  4. Step 4: Simplify right side
    167,396.90x = 21,002,794,458.72
  5. Step 5: Solve for x
    x = 21,002,794,458.72/167,396.90
  6. Step 6: Final answer
    x = 125,467.04

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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.