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Finding the Fourth Proportional to 167,434.50, 231,059.70 and 91,987.86

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Solution

The fourth proportional to 167,434.50, 231,059.70 and 91,987.86 is: 126,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,434.50 : 231,059.70 = 91,987.86 : x
  2. Step 2: Convert to fraction form
    167,434.50/231,059.70 = 91,987.86/x
  3. Step 3: Cross multiply
    167,434.50x = 231,059.70 × 91,987.86
  4. Step 4: Simplify right side
    167,434.50x = 21,254,687,335.24
  5. Step 5: Solve for x
    x = 21,254,687,335.24/167,434.50
  6. Step 6: Final answer
    x = 126,943.30

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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.