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Finding the Fourth Proportional to 172.60, 237.97 and 123.38

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Solution

The fourth proportional to 172.60, 237.97 and 123.38 is: 170.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172.60 : 237.97 = 123.38 : x
  2. Step 2: Convert to fraction form
    172.60/237.97 = 123.38/x
  3. Step 3: Cross multiply
    172.60x = 237.97 × 123.38
  4. Step 4: Simplify right side
    172.60x = 29,360.74
  5. Step 5: Solve for x
    x = 29,360.74/172.60
  6. Step 6: Final answer
    x = 170.11

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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.