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Finding the Fourth Proportional to 103.73, 141.33 and 101.51

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Solution

The fourth proportional to 103.73, 141.33 and 101.51 is: 138.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.73 : 141.33 = 101.51 : x
  2. Step 2: Convert to fraction form
    103.73/141.33 = 101.51/x
  3. Step 3: Cross multiply
    103.73x = 141.33 × 101.51
  4. Step 4: Simplify right side
    103.73x = 14,345.70
  5. Step 5: Solve for x
    x = 14,345.70/103.73
  6. Step 6: Final answer
    x = 138.31

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.