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Finding the Fourth Proportional to 68,220.80, 102,194.96 and 54,204.56

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Solution

The fourth proportional to 68,220.80, 102,194.96 and 54,204.56 is: 81,198.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,220.80 : 102,194.96 = 54,204.56 : x
  2. Step 2: Convert to fraction form
    68,220.80/102,194.96 = 54,204.56/x
  3. Step 3: Cross multiply
    68,220.80x = 102,194.96 × 54,204.56
  4. Step 4: Simplify right side
    68,220.80x = 5,539,432,841.02
  5. Step 5: Solve for x
    x = 5,539,432,841.02/68,220.80
  6. Step 6: Final answer
    x = 81,198.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.