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Finding the Fourth Proportional to 160.05, 220.50 and 123.09

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Solution

The fourth proportional to 160.05, 220.50 and 123.09 is: 169.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.05 : 220.50 = 123.09 : x
  2. Step 2: Convert to fraction form
    160.05/220.50 = 123.09/x
  3. Step 3: Cross multiply
    160.05x = 220.50 × 123.09
  4. Step 4: Simplify right side
    160.05x = 27,141.35
  5. Step 5: Solve for x
    x = 27,141.35/160.05
  6. Step 6: Final answer
    x = 169.58

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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.