Home / 121,719.15-167,969.33-68,004.57

Finding the Fourth Proportional to 121,719.15, 167,969.33 and 68,004.57

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Solution

The fourth proportional to 121,719.15, 167,969.33 and 68,004.57 is: 93,844.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,719.15 : 167,969.33 = 68,004.57 : x
  2. Step 2: Convert to fraction form
    121,719.15/167,969.33 = 68,004.57/x
  3. Step 3: Cross multiply
    121,719.15x = 167,969.33 × 68,004.57
  4. Step 4: Simplify right side
    121,719.15x = 11,422,680,879.97
  5. Step 5: Solve for x
    x = 11,422,680,879.97/121,719.15
  6. Step 6: Final answer
    x = 93,844.57

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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.