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Finding the Fourth Proportional to 107.04, 161.52 and 103.44

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Solution

The fourth proportional to 107.04, 161.52 and 103.44 is: 156.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.04 : 161.52 = 103.44 : x
  2. Step 2: Convert to fraction form
    107.04/161.52 = 103.44/x
  3. Step 3: Cross multiply
    107.04x = 161.52 × 103.44
  4. Step 4: Simplify right side
    107.04x = 16,707.63
  5. Step 5: Solve for x
    x = 16,707.63/107.04
  6. Step 6: Final answer
    x = 156.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.