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Finding the Fourth Proportional to 124.94, 187.09 and 92.39

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Solution

The fourth proportional to 124.94, 187.09 and 92.39 is: 138.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.94 : 187.09 = 92.39 : x
  2. Step 2: Convert to fraction form
    124.94/187.09 = 92.39/x
  3. Step 3: Cross multiply
    124.94x = 187.09 × 92.39
  4. Step 4: Simplify right side
    124.94x = 17,285.75
  5. Step 5: Solve for x
    x = 17,285.75/124.94
  6. Step 6: Final answer
    x = 138.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.