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Finding the Fourth Proportional to 118.34, 162.58 and 106.64

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Solution

The fourth proportional to 118.34, 162.58 and 106.64 is: 146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.34 : 162.58 = 106.64 : x
  2. Step 2: Convert to fraction form
    118.34/162.58 = 106.64/x
  3. Step 3: Cross multiply
    118.34x = 162.58 × 106.64
  4. Step 4: Simplify right side
    118.34x = 17,337.53
  5. Step 5: Solve for x
    x = 17,337.53/118.34
  6. Step 6: Final answer
    x = 146.51

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.