Home / 121,100.38-167,116.44-67,383.88

Finding the Fourth Proportional to 121,100.38, 167,116.44 and 67,383.88

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Solution

The fourth proportional to 121,100.38, 167,116.44 and 67,383.88 is: 92,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,100.38 : 167,116.44 = 67,383.88 : x
  2. Step 2: Convert to fraction form
    121,100.38/167,116.44 = 67,383.88/x
  3. Step 3: Cross multiply
    121,100.38x = 167,116.44 × 67,383.88
  4. Step 4: Simplify right side
    121,100.38x = 11,260,954,138.99
  5. Step 5: Solve for x
    x = 11,260,954,138.99/121,100.38
  6. Step 6: Final answer
    x = 92,988.59

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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.