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Finding the Fourth Proportional to 117.09, 162.29 and 114.93

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Solution

The fourth proportional to 117.09, 162.29 and 114.93 is: 159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.09 : 162.29 = 114.93 : x
  2. Step 2: Convert to fraction form
    117.09/162.29 = 114.93/x
  3. Step 3: Cross multiply
    117.09x = 162.29 × 114.93
  4. Step 4: Simplify right side
    117.09x = 18,651.42
  5. Step 5: Solve for x
    x = 18,651.42/117.09
  6. Step 6: Final answer
    x = 159.29

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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.