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Finding the Fourth Proportional to 121,305.87, 167,399.87 and 67,589.73

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Solution

The fourth proportional to 121,305.87, 167,399.87 and 67,589.73 is: 93,272.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,305.87 : 167,399.87 = 67,589.73 : x
  2. Step 2: Convert to fraction form
    121,305.87/167,399.87 = 67,589.73/x
  3. Step 3: Cross multiply
    121,305.87x = 167,399.87 × 67,589.73
  4. Step 4: Simplify right side
    121,305.87x = 11,314,512,015.34
  5. Step 5: Solve for x
    x = 11,314,512,015.34/121,305.87
  6. Step 6: Final answer
    x = 93,272.58

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1.5x scale

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.