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Finding the Fourth Proportional to 107.61, 160.59 and 102.15

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Solution

The fourth proportional to 107.61, 160.59 and 102.15 is: 152.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.61 : 160.59 = 102.15 : x
  2. Step 2: Convert to fraction form
    107.61/160.59 = 102.15/x
  3. Step 3: Cross multiply
    107.61x = 160.59 × 102.15
  4. Step 4: Simplify right side
    107.61x = 16,404.27
  5. Step 5: Solve for x
    x = 16,404.27/107.61
  6. Step 6: Final answer
    x = 152.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.