Home / 121,455.11-167,608.31-67,743.57

Finding the Fourth Proportional to 121,455.11, 167,608.31 and 67,743.57

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Solution

The fourth proportional to 121,455.11, 167,608.31 and 67,743.57 is: 93,486.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,455.11 : 167,608.31 = 67,743.57 : x
  2. Step 2: Convert to fraction form
    121,455.11/167,608.31 = 67,743.57/x
  3. Step 3: Cross multiply
    121,455.11x = 167,608.31 × 67,743.57
  4. Step 4: Simplify right side
    121,455.11x = 11,354,384,942.35
  5. Step 5: Solve for x
    x = 11,354,384,942.35/121,455.11
  6. Step 6: Final answer
    x = 93,486.27

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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.