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Finding the Fourth Proportional to 117.30, 175.99 and 109.68

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Solution

The fourth proportional to 117.30, 175.99 and 109.68 is: 164.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.30 : 175.99 = 109.68 : x
  2. Step 2: Convert to fraction form
    117.30/175.99 = 109.68/x
  3. Step 3: Cross multiply
    117.30x = 175.99 × 109.68
  4. Step 4: Simplify right side
    117.30x = 19,302.58
  5. Step 5: Solve for x
    x = 19,302.58/117.30
  6. Step 6: Final answer
    x = 164.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.