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Finding the Fourth Proportional to 107.99, 162.11 and 88.76

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Solution

The fourth proportional to 107.99, 162.11 and 88.76 is: 133.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.99 : 162.11 = 88.76 : x
  2. Step 2: Convert to fraction form
    107.99/162.11 = 88.76/x
  3. Step 3: Cross multiply
    107.99x = 162.11 × 88.76
  4. Step 4: Simplify right side
    107.99x = 14,389.01
  5. Step 5: Solve for x
    x = 14,389.01/107.99
  6. Step 6: Final answer
    x = 133.25

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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.