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Finding the Fourth Proportional to 160,820.50, 221,786.99 and 100,396.73

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Solution

The fourth proportional to 160,820.50, 221,786.99 and 100,396.73 is: 138,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,820.50 : 221,786.99 = 100,396.73 : x
  2. Step 2: Convert to fraction form
    160,820.50/221,786.99 = 100,396.73/x
  3. Step 3: Cross multiply
    160,820.50x = 221,786.99 × 100,396.73
  4. Step 4: Simplify right side
    160,820.50x = 22,266,688,552.54
  5. Step 5: Solve for x
    x = 22,266,688,552.54/160,820.50
  6. Step 6: Final answer
    x = 138,456.78

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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.