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Finding the Fourth Proportional to 117.23, 162.86 and 116.10

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Solution

The fourth proportional to 117.23, 162.86 and 116.10 is: 161.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.23 : 162.86 = 116.10 : x
  2. Step 2: Convert to fraction form
    117.23/162.86 = 116.10/x
  3. Step 3: Cross multiply
    117.23x = 162.86 × 116.10
  4. Step 4: Simplify right side
    117.23x = 18,907.47
  5. Step 5: Solve for x
    x = 18,907.47/117.23
  6. Step 6: Final answer
    x = 161.29

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.