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Finding the Fourth Proportional to 160.12, 240.22 and 87.08

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Solution

The fourth proportional to 160.12, 240.22 and 87.08 is: 130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.12 : 240.22 = 87.08 : x
  2. Step 2: Convert to fraction form
    160.12/240.22 = 87.08/x
  3. Step 3: Cross multiply
    160.12x = 240.22 × 87.08
  4. Step 4: Simplify right side
    160.12x = 20,918.36
  5. Step 5: Solve for x
    x = 20,918.36/160.12
  6. Step 6: Final answer
    x = 130.64

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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.