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Finding the Fourth Proportional to 121,667.55, 167,884.63 and 67,945.72

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Solution

The fourth proportional to 121,667.55, 167,884.63 and 67,945.72 is: 93,755.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,667.55 : 167,884.63 = 67,945.72 : x
  2. Step 2: Convert to fraction form
    121,667.55/167,884.63 = 67,945.72/x
  3. Step 3: Cross multiply
    121,667.55x = 167,884.63 × 67,945.72
  4. Step 4: Simplify right side
    121,667.55x = 11,407,040,883.13
  5. Step 5: Solve for x
    x = 11,407,040,883.13/121,667.55
  6. Step 6: Final answer
    x = 93,755.82

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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.