Home / 121,824.78-168,120.27-68,104.02

Finding the Fourth Proportional to 121,824.78, 168,120.27 and 68,104.02

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Solution

The fourth proportional to 121,824.78, 168,120.27 and 68,104.02 is: 93,984.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,824.78 : 168,120.27 = 68,104.02 : x
  2. Step 2: Convert to fraction form
    121,824.78/168,120.27 = 68,104.02/x
  3. Step 3: Cross multiply
    121,824.78x = 168,120.27 × 68,104.02
  4. Step 4: Simplify right side
    121,824.78x = 11,449,666,230.49
  5. Step 5: Solve for x
    x = 11,449,666,230.49/121,824.78
  6. Step 6: Final answer
    x = 93,984.71

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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.