Home / 121,823.50-168,162.24-91,696

Finding the Fourth Proportional to 121,823.50, 168,162.24 and 91,696

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Solution

The fourth proportional to 121,823.50, 168,162.24 and 91,696 is: 126,574.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,823.50 : 168,162.24 = 91,696 : x
  2. Step 2: Convert to fraction form
    121,823.50/168,162.24 = 91,696/x
  3. Step 3: Cross multiply
    121,823.50x = 168,162.24 × 91,696
  4. Step 4: Simplify right side
    121,823.50x = 15,419,804,759.04
  5. Step 5: Solve for x
    x = 15,419,804,759.04/121,823.50
  6. Step 6: Final answer
    x = 126,574.96

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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.