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Finding the Fourth Proportional to 160.03, 220.79 and 100.99

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Solution

The fourth proportional to 160.03, 220.79 and 100.99 is: 139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.03 : 220.79 = 100.99 : x
  2. Step 2: Convert to fraction form
    160.03/220.79 = 100.99/x
  3. Step 3: Cross multiply
    160.03x = 220.79 × 100.99
  4. Step 4: Simplify right side
    160.03x = 22,297.58
  5. Step 5: Solve for x
    x = 22,297.58/160.03
  6. Step 6: Final answer
    x = 139.33

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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.