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Finding the Fourth Proportional to 137.84, 207.63 and 125.82

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Solution

The fourth proportional to 137.84, 207.63 and 125.82 is: 189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.84 : 207.63 = 125.82 : x
  2. Step 2: Convert to fraction form
    137.84/207.63 = 125.82/x
  3. Step 3: Cross multiply
    137.84x = 207.63 × 125.82
  4. Step 4: Simplify right side
    137.84x = 26,124.01
  5. Step 5: Solve for x
    x = 26,124.01/137.84
  6. Step 6: Final answer
    x = 189.53

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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.