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Finding the Fourth Proportional to 121,073.76, 167,104.80 and 75,772.80

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Solution

The fourth proportional to 121,073.76, 167,104.80 and 75,772.80 is: 104,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,073.76 : 167,104.80 = 75,772.80 : x
  2. Step 2: Convert to fraction form
    121,073.76/167,104.80 = 75,772.80/x
  3. Step 3: Cross multiply
    121,073.76x = 167,104.80 × 75,772.80
  4. Step 4: Simplify right side
    121,073.76x = 12,661,998,589.44
  5. Step 5: Solve for x
    x = 12,661,998,589.44/121,073.76
  6. Step 6: Final answer
    x = 104,580.87

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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.