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Finding the Fourth Proportional to 121,750.92, 167,967.15 and 80,934.79

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Solution

The fourth proportional to 121,750.92, 167,967.15 and 80,934.79 is: 111,657.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,750.92 : 167,967.15 = 80,934.79 : x
  2. Step 2: Convert to fraction form
    121,750.92/167,967.15 = 80,934.79/x
  3. Step 3: Cross multiply
    121,750.92x = 167,967.15 × 80,934.79
  4. Step 4: Simplify right side
    121,750.92x = 13,594,384,767.64
  5. Step 5: Solve for x
    x = 13,594,384,767.64/121,750.92
  6. Step 6: Final answer
    x = 111,657.35

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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.