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Finding the Fourth Proportional to 134.73, 185.99 and 128.93

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Solution

The fourth proportional to 134.73, 185.99 and 128.93 is: 177.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.73 : 185.99 = 128.93 : x
  2. Step 2: Convert to fraction form
    134.73/185.99 = 128.93/x
  3. Step 3: Cross multiply
    134.73x = 185.99 × 128.93
  4. Step 4: Simplify right side
    134.73x = 23,979.69
  5. Step 5: Solve for x
    x = 23,979.69/134.73
  6. Step 6: Final answer
    x = 177.98

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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.