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Finding the Fourth Proportional to 125.09, 172.50 and 92.27

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Solution

The fourth proportional to 125.09, 172.50 and 92.27 is: 127.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.09 : 172.50 = 92.27 : x
  2. Step 2: Convert to fraction form
    125.09/172.50 = 92.27/x
  3. Step 3: Cross multiply
    125.09x = 172.50 × 92.27
  4. Step 4: Simplify right side
    125.09x = 15,916.58
  5. Step 5: Solve for x
    x = 15,916.58/125.09
  6. Step 6: Final answer
    x = 127.24

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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.