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Finding the Fourth Proportional to 117.08, 174.67 and 106.60

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Solution

The fourth proportional to 117.08, 174.67 and 106.60 is: 159.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.08 : 174.67 = 106.60 : x
  2. Step 2: Convert to fraction form
    117.08/174.67 = 106.60/x
  3. Step 3: Cross multiply
    117.08x = 174.67 × 106.60
  4. Step 4: Simplify right side
    117.08x = 18,619.82
  5. Step 5: Solve for x
    x = 18,619.82/117.08
  6. Step 6: Final answer
    x = 159.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.