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Finding the Fourth Proportional to 137.16, 206.75 and 125.62

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Solution

The fourth proportional to 137.16, 206.75 and 125.62 is: 189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.16 : 206.75 = 125.62 : x
  2. Step 2: Convert to fraction form
    137.16/206.75 = 125.62/x
  3. Step 3: Cross multiply
    137.16x = 206.75 × 125.62
  4. Step 4: Simplify right side
    137.16x = 25,971.94
  5. Step 5: Solve for x
    x = 25,971.94/137.16
  6. Step 6: Final answer
    x = 189.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.