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Finding the Fourth Proportional to 149.36, 206.19 and 93.36

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Solution

The fourth proportional to 149.36, 206.19 and 93.36 is: 128.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.36 : 206.19 = 93.36 : x
  2. Step 2: Convert to fraction form
    149.36/206.19 = 93.36/x
  3. Step 3: Cross multiply
    149.36x = 206.19 × 93.36
  4. Step 4: Simplify right side
    149.36x = 19,248.87
  5. Step 5: Solve for x
    x = 19,248.87/149.36
  6. Step 6: Final answer
    x = 128.88

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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.