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Finding the Fourth Proportional to 121,110.50, 167,132.49 and 68,118.50

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Solution

The fourth proportional to 121,110.50, 167,132.49 and 68,118.50 is: 94,003.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,110.50 : 167,132.49 = 68,118.50 : x
  2. Step 2: Convert to fraction form
    121,110.50/167,132.49 = 68,118.50/x
  3. Step 3: Cross multiply
    121,110.50x = 167,132.49 × 68,118.50
  4. Step 4: Simplify right side
    121,110.50x = 11,384,814,520.07
  5. Step 5: Solve for x
    x = 11,384,814,520.07/121,110.50
  6. Step 6: Final answer
    x = 94,003.53

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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.