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Finding the Fourth Proportional to 161,997.87, 223,556.45 and 90,377.94

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Solution

The fourth proportional to 161,997.87, 223,556.45 and 90,377.94 is: 124,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,997.87 : 223,556.45 = 90,377.94 : x
  2. Step 2: Convert to fraction form
    161,997.87/223,556.45 = 90,377.94/x
  3. Step 3: Cross multiply
    161,997.87x = 223,556.45 × 90,377.94
  4. Step 4: Simplify right side
    161,997.87x = 20,204,570,972.82
  5. Step 5: Solve for x
    x = 20,204,570,972.82/161,997.87
  6. Step 6: Final answer
    x = 124,721.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.