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Finding the Fourth Proportional to 121,391.44, 167,516.53 and 66,943.59

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Solution

The fourth proportional to 121,391.44, 167,516.53 and 66,943.59 is: 92,380.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,391.44 : 167,516.53 = 66,943.59 : x
  2. Step 2: Convert to fraction form
    121,391.44/167,516.53 = 66,943.59/x
  3. Step 3: Cross multiply
    121,391.44x = 167,516.53 × 66,943.59
  4. Step 4: Simplify right side
    121,391.44x = 11,214,157,107.00
  5. Step 5: Solve for x
    x = 11,214,157,107.00/121,391.44
  6. Step 6: Final answer
    x = 92,380.13

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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.