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Finding the Fourth Proportional to 167,434, 231,059.01 and 91,987.36

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Solution

The fourth proportional to 167,434, 231,059.01 and 91,987.36 is: 126,942.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,434 : 231,059.01 = 91,987.36 : x
  2. Step 2: Convert to fraction form
    167,434/231,059.01 = 91,987.36/x
  3. Step 3: Cross multiply
    167,434x = 231,059.01 × 91,987.36
  4. Step 4: Simplify right side
    167,434x = 21,254,508,334.11
  5. Step 5: Solve for x
    x = 21,254,508,334.11/167,434
  6. Step 6: Final answer
    x = 126,942.61

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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.