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Finding the Fourth Proportional to 135.68, 203.36 and 130.24

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Solution

The fourth proportional to 135.68, 203.36 and 130.24 is: 195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.68 : 203.36 = 130.24 : x
  2. Step 2: Convert to fraction form
    135.68/203.36 = 130.24/x
  3. Step 3: Cross multiply
    135.68x = 203.36 × 130.24
  4. Step 4: Simplify right side
    135.68x = 26,485.61
  5. Step 5: Solve for x
    x = 26,485.61/135.68
  6. Step 6: Final answer
    x = 195.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.