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Finding the Fourth Proportional to 167,694, 231,418.62 and 91,213.66

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Solution

The fourth proportional to 167,694, 231,418.62 and 91,213.66 is: 125,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,694 : 231,418.62 = 91,213.66 : x
  2. Step 2: Convert to fraction form
    167,694/231,418.62 = 91,213.66/x
  3. Step 3: Cross multiply
    167,694x = 231,418.62 × 91,213.66
  4. Step 4: Simplify right side
    167,694x = 21,108,539,322.35
  5. Step 5: Solve for x
    x = 21,108,539,322.35/167,694
  6. Step 6: Final answer
    x = 125,875.34

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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.