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Finding the Fourth Proportional to 121,111.75, 167,134.22 and 68,119.75

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Solution

The fourth proportional to 121,111.75, 167,134.22 and 68,119.75 is: 94,005.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,111.75 : 167,134.22 = 68,119.75 : x
  2. Step 2: Convert to fraction form
    121,111.75/167,134.22 = 68,119.75/x
  3. Step 3: Cross multiply
    121,111.75x = 167,134.22 × 68,119.75
  4. Step 4: Simplify right side
    121,111.75x = 11,385,140,942.25
  5. Step 5: Solve for x
    x = 11,385,140,942.25/121,111.75
  6. Step 6: Final answer
    x = 94,005.26

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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.