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Finding the Fourth Proportional to 159.76, 239.76 and 94.72

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Solution

The fourth proportional to 159.76, 239.76 and 94.72 is: 142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.76 : 239.76 = 94.72 : x
  2. Step 2: Convert to fraction form
    159.76/239.76 = 94.72/x
  3. Step 3: Cross multiply
    159.76x = 239.76 × 94.72
  4. Step 4: Simplify right side
    159.76x = 22,710.07
  5. Step 5: Solve for x
    x = 22,710.07/159.76
  6. Step 6: Final answer
    x = 142.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.