Home / 121,120.45-167,144.92-67,404.56

Finding the Fourth Proportional to 121,120.45, 167,144.92 and 67,404.56

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Solution

The fourth proportional to 121,120.45, 167,144.92 and 67,404.56 is: 93,017.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,120.45 : 167,144.92 = 67,404.56 : x
  2. Step 2: Convert to fraction form
    121,120.45/167,144.92 = 67,404.56/x
  3. Step 3: Cross multiply
    121,120.45x = 167,144.92 × 67,404.56
  4. Step 4: Simplify right side
    121,120.45x = 11,266,328,784.60
  5. Step 5: Solve for x
    x = 11,266,328,784.60/121,120.45
  6. Step 6: Final answer
    x = 93,017.56

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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.