Home / 167,687.07-231,409.61-91,206.78

Finding the Fourth Proportional to 167,687.07, 231,409.61 and 91,206.78

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Solution

The fourth proportional to 167,687.07, 231,409.61 and 91,206.78 is: 125,866.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,687.07 : 231,409.61 = 91,206.78 : x
  2. Step 2: Convert to fraction form
    167,687.07/231,409.61 = 91,206.78/x
  3. Step 3: Cross multiply
    167,687.07x = 231,409.61 × 91,206.78
  4. Step 4: Simplify right side
    167,687.07x = 21,106,125,389.16
  5. Step 5: Solve for x
    x = 21,106,125,389.16/167,687.07
  6. Step 6: Final answer
    x = 125,866.15

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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.