Home / 121,538.91-167,723.71-67,091.09

Finding the Fourth Proportional to 121,538.91, 167,723.71 and 67,091.09

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Solution

The fourth proportional to 121,538.91, 167,723.71 and 67,091.09 is: 92,585.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,538.91 : 167,723.71 = 67,091.09 : x
  2. Step 2: Convert to fraction form
    121,538.91/167,723.71 = 67,091.09/x
  3. Step 3: Cross multiply
    121,538.91x = 167,723.71 × 67,091.09
  4. Step 4: Simplify right side
    121,538.91x = 11,252,766,522.74
  5. Step 5: Solve for x
    x = 11,252,766,522.74/121,538.91
  6. Step 6: Final answer
    x = 92,585.71

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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.