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Finding the Fourth Proportional to 107.16, 160.47 and 98.25

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Solution

The fourth proportional to 107.16, 160.47 and 98.25 is: 147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.16 : 160.47 = 98.25 : x
  2. Step 2: Convert to fraction form
    107.16/160.47 = 98.25/x
  3. Step 3: Cross multiply
    107.16x = 160.47 × 98.25
  4. Step 4: Simplify right side
    107.16x = 15,765.69
  5. Step 5: Solve for x
    x = 15,765.69/107.16
  6. Step 6: Final answer
    x = 147.12

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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.