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Finding the Fourth Proportional to 106.18, 146.58 and 67.39

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Solution

The fourth proportional to 106.18, 146.58 and 67.39 is: 93.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    106.18 : 146.58 = 67.39 : x
  2. Step 2: Convert to fraction form
    106.18/146.58 = 67.39/x
  3. Step 3: Cross multiply
    106.18x = 146.58 × 67.39
  4. Step 4: Simplify right side
    106.18x = 9,878.03
  5. Step 5: Solve for x
    x = 9,878.03/106.18
  6. Step 6: Final answer
    x = 93.03

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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.