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Finding the Fourth Proportional to 117.62, 162.24 and 73.94

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Solution

The fourth proportional to 117.62, 162.24 and 73.94 is: 101.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.62 : 162.24 = 73.94 : x
  2. Step 2: Convert to fraction form
    117.62/162.24 = 73.94/x
  3. Step 3: Cross multiply
    117.62x = 162.24 × 73.94
  4. Step 4: Simplify right side
    117.62x = 11,996.03
  5. Step 5: Solve for x
    x = 11,996.03/117.62
  6. Step 6: Final answer
    x = 101.99

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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.