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Finding the Fourth Proportional to 121,372.50, 167,425.45 and 75,971.67

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Solution

The fourth proportional to 121,372.50, 167,425.45 and 75,971.67 is: 104,797.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,372.50 : 167,425.45 = 75,971.67 : x
  2. Step 2: Convert to fraction form
    121,372.50/167,425.45 = 75,971.67/x
  3. Step 3: Cross multiply
    121,372.50x = 167,425.45 × 75,971.67
  4. Step 4: Simplify right side
    121,372.50x = 12,719,591,037.00
  5. Step 5: Solve for x
    x = 12,719,591,037.00/121,372.50
  6. Step 6: Final answer
    x = 104,797.97

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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.