Home / 121,823.78-168,132.26-68,111.97

Finding the Fourth Proportional to 121,823.78, 168,132.26 and 68,111.97

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Solution

The fourth proportional to 121,823.78, 168,132.26 and 68,111.97 is: 94,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,823.78 : 168,132.26 = 68,111.97 : x
  2. Step 2: Convert to fraction form
    121,823.78/168,132.26 = 68,111.97/x
  3. Step 3: Cross multiply
    121,823.78x = 168,132.26 × 68,111.97
  4. Step 4: Simplify right side
    121,823.78x = 11,451,819,108.59
  5. Step 5: Solve for x
    x = 11,451,819,108.59/121,823.78
  6. Step 6: Final answer
    x = 94,003.15

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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.