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Finding the Fourth Proportional to 121,289.82, 167,378.85 and 67,573.86

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Solution

The fourth proportional to 121,289.82, 167,378.85 and 67,573.86 is: 93,251.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,289.82 : 167,378.85 = 67,573.86 : x
  2. Step 2: Convert to fraction form
    121,289.82/167,378.85 = 67,573.86/x
  3. Step 3: Cross multiply
    121,289.82x = 167,378.85 × 67,573.86
  4. Step 4: Simplify right side
    121,289.82x = 11,310,434,976.86
  5. Step 5: Solve for x
    x = 11,310,434,976.86/121,289.82
  6. Step 6: Final answer
    x = 93,251.31

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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.