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Finding the Fourth Proportional to 160.81, 241.14 and 87.74

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Solution

The fourth proportional to 160.81, 241.14 and 87.74 is: 131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.81 : 241.14 = 87.74 : x
  2. Step 2: Convert to fraction form
    160.81/241.14 = 87.74/x
  3. Step 3: Cross multiply
    160.81x = 241.14 × 87.74
  4. Step 4: Simplify right side
    160.81x = 21,158.56
  5. Step 5: Solve for x
    x = 21,158.56/160.81
  6. Step 6: Final answer
    x = 131.58

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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.