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Finding the Fourth Proportional to 127.62, 190.75 and 117.37

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Solution

The fourth proportional to 127.62, 190.75 and 117.37 is: 175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.62 : 190.75 = 117.37 : x
  2. Step 2: Convert to fraction form
    127.62/190.75 = 117.37/x
  3. Step 3: Cross multiply
    127.62x = 190.75 × 117.37
  4. Step 4: Simplify right side
    127.62x = 22,387.74
  5. Step 5: Solve for x
    x = 22,387.74/127.62
  6. Step 6: Final answer
    x = 175.43

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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.