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Finding the Fourth Proportional to 185,456.70, 278,091.90 and 90,694.26

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Solution

The fourth proportional to 185,456.70, 278,091.90 and 90,694.26 is: 135,995.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,456.70 : 278,091.90 = 90,694.26 : x
  2. Step 2: Convert to fraction form
    185,456.70/278,091.90 = 90,694.26/x
  3. Step 3: Cross multiply
    185,456.70x = 278,091.90 × 90,694.26
  4. Step 4: Simplify right side
    185,456.70x = 25,221,339,082.49
  5. Step 5: Solve for x
    x = 25,221,339,082.49/185,456.70
  6. Step 6: Final answer
    x = 135,995.84

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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.