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Finding the Fourth Proportional to 136.81, 203.99 and 130.06

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Solution

The fourth proportional to 136.81, 203.99 and 130.06 is: 193.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.81 : 203.99 = 130.06 : x
  2. Step 2: Convert to fraction form
    136.81/203.99 = 130.06/x
  3. Step 3: Cross multiply
    136.81x = 203.99 × 130.06
  4. Step 4: Simplify right side
    136.81x = 26,530.94
  5. Step 5: Solve for x
    x = 26,530.94/136.81
  6. Step 6: Final answer
    x = 193.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.