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Finding the Fourth Proportional to 160,820.43, 221,786.94 and 100,396.68

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Solution

The fourth proportional to 160,820.43, 221,786.94 and 100,396.68 is: 138,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,820.43 : 221,786.94 = 100,396.68 : x
  2. Step 2: Convert to fraction form
    160,820.43/221,786.94 = 100,396.68/x
  3. Step 3: Cross multiply
    160,820.43x = 221,786.94 × 100,396.68
  4. Step 4: Simplify right side
    160,820.43x = 22,266,672,443.36
  5. Step 5: Solve for x
    x = 22,266,672,443.36/160,820.43
  6. Step 6: Final answer
    x = 138,456.74

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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.