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Finding the Fourth Proportional to 135.95, 203.49 and 74.93

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Solution

The fourth proportional to 135.95, 203.49 and 74.93 is: 112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.95 : 203.49 = 74.93 : x
  2. Step 2: Convert to fraction form
    135.95/203.49 = 74.93/x
  3. Step 3: Cross multiply
    135.95x = 203.49 × 74.93
  4. Step 4: Simplify right side
    135.95x = 15,246.49
  5. Step 5: Solve for x
    x = 15,246.49/135.95
  6. Step 6: Final answer
    x = 112.15

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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.