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Finding the Fourth Proportional to 123.66, 170.51 and 95.99

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Solution

The fourth proportional to 123.66, 170.51 and 95.99 is: 132.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.66 : 170.51 = 95.99 : x
  2. Step 2: Convert to fraction form
    123.66/170.51 = 95.99/x
  3. Step 3: Cross multiply
    123.66x = 170.51 × 95.99
  4. Step 4: Simplify right side
    123.66x = 16,365.92
  5. Step 5: Solve for x
    x = 16,365.92/123.66
  6. Step 6: Final answer
    x = 132.35

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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.