Home / 165,540.80-248,138.40-90,545.60

Finding the Fourth Proportional to 165,540.80, 248,138.40 and 90,545.60

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Solution

The fourth proportional to 165,540.80, 248,138.40 and 90,545.60 is: 135,723.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,540.80 : 248,138.40 = 90,545.60 : x
  2. Step 2: Convert to fraction form
    165,540.80/248,138.40 = 90,545.60/x
  3. Step 3: Cross multiply
    165,540.80x = 248,138.40 × 90,545.60
  4. Step 4: Simplify right side
    165,540.80x = 22,467,840,311.04
  5. Step 5: Solve for x
    x = 22,467,840,311.04/165,540.80
  6. Step 6: Final answer
    x = 135,723.88

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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.