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Finding the Fourth Proportional to 176.61, 243.42 and 141.57

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Solution

The fourth proportional to 176.61, 243.42 and 141.57 is: 195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.61 : 243.42 = 141.57 : x
  2. Step 2: Convert to fraction form
    176.61/243.42 = 141.57/x
  3. Step 3: Cross multiply
    176.61x = 243.42 × 141.57
  4. Step 4: Simplify right side
    176.61x = 34,460.97
  5. Step 5: Solve for x
    x = 34,460.97/176.61
  6. Step 6: Final answer
    x = 195.13

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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.