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Finding the Fourth Proportional to 176.34, 243.36 and 123.96

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Solution

The fourth proportional to 176.34, 243.36 and 123.96 is: 171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.34 : 243.36 = 123.96 : x
  2. Step 2: Convert to fraction form
    176.34/243.36 = 123.96/x
  3. Step 3: Cross multiply
    176.34x = 243.36 × 123.96
  4. Step 4: Simplify right side
    176.34x = 30,166.91
  5. Step 5: Solve for x
    x = 30,166.91/176.34
  6. Step 6: Final answer
    x = 171.07

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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.