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Finding the Fourth Proportional to 100.41, 136.73 and 98.99

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Solution

The fourth proportional to 100.41, 136.73 and 98.99 is: 134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.41 : 136.73 = 98.99 : x
  2. Step 2: Convert to fraction form
    100.41/136.73 = 98.99/x
  3. Step 3: Cross multiply
    100.41x = 136.73 × 98.99
  4. Step 4: Simplify right side
    100.41x = 13,533.72
  5. Step 5: Solve for x
    x = 13,533.72/100.41
  6. Step 6: Final answer
    x = 134.78

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.