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Finding the Fourth Proportional to 125.08, 172.54 and 92.38

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Solution

The fourth proportional to 125.08, 172.54 and 92.38 is: 127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.08 : 172.54 = 92.38 : x
  2. Step 2: Convert to fraction form
    125.08/172.54 = 92.38/x
  3. Step 3: Cross multiply
    125.08x = 172.54 × 92.38
  4. Step 4: Simplify right side
    125.08x = 15,939.25
  5. Step 5: Solve for x
    x = 15,939.25/125.08
  6. Step 6: Final answer
    x = 127.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.