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Finding the Fourth Proportional to 82,273.80, 123,410.70 and 81,755.40

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Solution

The fourth proportional to 82,273.80, 123,410.70 and 81,755.40 is: 122,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,273.80 : 123,410.70 = 81,755.40 : x
  2. Step 2: Convert to fraction form
    82,273.80/123,410.70 = 81,755.40/x
  3. Step 3: Cross multiply
    82,273.80x = 123,410.70 × 81,755.40
  4. Step 4: Simplify right side
    82,273.80x = 10,089,491,142.78
  5. Step 5: Solve for x
    x = 10,089,491,142.78/82,273.80
  6. Step 6: Final answer
    x = 122,633.10

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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.