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Finding the Fourth Proportional to 136.58, 188.03 and 127.39

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Solution

The fourth proportional to 136.58, 188.03 and 127.39 is: 175.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.58 : 188.03 = 127.39 : x
  2. Step 2: Convert to fraction form
    136.58/188.03 = 127.39/x
  3. Step 3: Cross multiply
    136.58x = 188.03 × 127.39
  4. Step 4: Simplify right side
    136.58x = 23,953.29
  5. Step 5: Solve for x
    x = 23,953.29/136.58
  6. Step 6: Final answer
    x = 175.38

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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.