Home / 266,781.25-400,172.55-109,009.70

Finding the Fourth Proportional to 266,781.25, 400,172.55 and 109,009.70

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Solution

The fourth proportional to 266,781.25, 400,172.55 and 109,009.70 is: 163,514.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,781.25 : 400,172.55 = 109,009.70 : x
  2. Step 2: Convert to fraction form
    266,781.25/400,172.55 = 109,009.70/x
  3. Step 3: Cross multiply
    266,781.25x = 400,172.55 × 109,009.70
  4. Step 4: Simplify right side
    266,781.25x = 43,622,689,327.91
  5. Step 5: Solve for x
    x = 43,622,689,327.91/266,781.25
  6. Step 6: Final answer
    x = 163,514.83

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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.