Home / 126,146.97-188,834.09-81,685.26

Finding the Fourth Proportional to 126,146.97, 188,834.09 and 81,685.26

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Solution

The fourth proportional to 126,146.97, 188,834.09 and 81,685.26 is: 122,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,146.97 : 188,834.09 = 81,685.26 : x
  2. Step 2: Convert to fraction form
    126,146.97/188,834.09 = 81,685.26/x
  3. Step 3: Cross multiply
    126,146.97x = 188,834.09 × 81,685.26
  4. Step 4: Simplify right side
    126,146.97x = 15,424,961,330.09
  5. Step 5: Solve for x
    x = 15,424,961,330.09/126,146.97
  6. Step 6: Final answer
    x = 122,277.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.