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Finding the Fourth Proportional to 137.58, 207.19 and 124.03

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Solution

The fourth proportional to 137.58, 207.19 and 124.03 is: 186.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.58 : 207.19 = 124.03 : x
  2. Step 2: Convert to fraction form
    137.58/207.19 = 124.03/x
  3. Step 3: Cross multiply
    137.58x = 207.19 × 124.03
  4. Step 4: Simplify right side
    137.58x = 25,698.19
  5. Step 5: Solve for x
    x = 25,698.19/137.58
  6. Step 6: Final answer
    x = 186.78

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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.