Home / 90,114-135,190.32-26,939.07

Finding the Fourth Proportional to 90,114, 135,190.32 and 26,939.07

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Solution

The fourth proportional to 90,114, 135,190.32 and 26,939.07 is: 40,414.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,114 : 135,190.32 = 26,939.07 : x
  2. Step 2: Convert to fraction form
    90,114/135,190.32 = 26,939.07/x
  3. Step 3: Cross multiply
    90,114x = 135,190.32 × 26,939.07
  4. Step 4: Simplify right side
    90,114x = 3,641,901,493.80
  5. Step 5: Solve for x
    x = 3,641,901,493.80/90,114
  6. Step 6: Final answer
    x = 40,414.38

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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.