Home / 160,820.21-221,786.61-100,396.42

Finding the Fourth Proportional to 160,820.21, 221,786.61 and 100,396.42

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Solution

The fourth proportional to 160,820.21, 221,786.61 and 100,396.42 is: 138,456.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,820.21 : 221,786.61 = 100,396.42 : x
  2. Step 2: Convert to fraction form
    160,820.21/221,786.61 = 100,396.42/x
  3. Step 3: Cross multiply
    160,820.21x = 221,786.61 × 100,396.42
  4. Step 4: Simplify right side
    160,820.21x = 22,266,581,647.94
  5. Step 5: Solve for x
    x = 22,266,581,647.94/160,820.21
  6. Step 6: Final answer
    x = 138,456.36

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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.