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Finding the Fourth Proportional to 139.95, 208.44 and 132.93

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Solution

The fourth proportional to 139.95, 208.44 and 132.93 is: 197.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.95 : 208.44 = 132.93 : x
  2. Step 2: Convert to fraction form
    139.95/208.44 = 132.93/x
  3. Step 3: Cross multiply
    139.95x = 208.44 × 132.93
  4. Step 4: Simplify right side
    139.95x = 27,707.93
  5. Step 5: Solve for x
    x = 27,707.93/139.95
  6. Step 6: Final answer
    x = 197.98

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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.