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Finding the Fourth Proportional to 103.98, 142.73 and 95.77

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Solution

The fourth proportional to 103.98, 142.73 and 95.77 is: 131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.98 : 142.73 = 95.77 : x
  2. Step 2: Convert to fraction form
    103.98/142.73 = 95.77/x
  3. Step 3: Cross multiply
    103.98x = 142.73 × 95.77
  4. Step 4: Simplify right side
    103.98x = 13,668.54
  5. Step 5: Solve for x
    x = 13,668.54/103.98
  6. Step 6: Final answer
    x = 131.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.