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Finding the Fourth Proportional to 121,103.11, 167,103.03 and 67,387.96

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Solution

The fourth proportional to 121,103.11, 167,103.03 and 67,387.96 is: 92,984.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,103.11 : 167,103.03 = 67,387.96 : x
  2. Step 2: Convert to fraction form
    121,103.11/167,103.03 = 67,387.96/x
  3. Step 3: Cross multiply
    121,103.11x = 167,103.03 × 67,387.96
  4. Step 4: Simplify right side
    121,103.11x = 11,260,732,301.52
  5. Step 5: Solve for x
    x = 11,260,732,301.52/121,103.11
  6. Step 6: Final answer
    x = 92,984.67

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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.