Home / 121,568.72-167,758-67,857.19

Finding the Fourth Proportional to 121,568.72, 167,758 and 67,857.19

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Solution

The fourth proportional to 121,568.72, 167,758 and 67,857.19 is: 93,639.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,568.72 : 167,758 = 67,857.19 : x
  2. Step 2: Convert to fraction form
    121,568.72/167,758 = 67,857.19/x
  3. Step 3: Cross multiply
    121,568.72x = 167,758 × 67,857.19
  4. Step 4: Simplify right side
    121,568.72x = 11,383,586,480.02
  5. Step 5: Solve for x
    x = 11,383,586,480.02/121,568.72
  6. Step 6: Final answer
    x = 93,639.11

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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.