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Finding the Fourth Proportional to 80,892.20, 121,338.30 and 73,893.80

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Solution

The fourth proportional to 80,892.20, 121,338.30 and 73,893.80 is: 110,840.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,892.20 : 121,338.30 = 73,893.80 : x
  2. Step 2: Convert to fraction form
    80,892.20/121,338.30 = 73,893.80/x
  3. Step 3: Cross multiply
    80,892.20x = 121,338.30 × 73,893.80
  4. Step 4: Simplify right side
    80,892.20x = 8,966,148,072.54
  5. Step 5: Solve for x
    x = 8,966,148,072.54/80,892.20
  6. Step 6: Final answer
    x = 110,840.70

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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.