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Finding the Fourth Proportional to 134.12, 185.04 and 99.07

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Solution

The fourth proportional to 134.12, 185.04 and 99.07 is: 136.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.12 : 185.04 = 99.07 : x
  2. Step 2: Convert to fraction form
    134.12/185.04 = 99.07/x
  3. Step 3: Cross multiply
    134.12x = 185.04 × 99.07
  4. Step 4: Simplify right side
    134.12x = 18,331.45
  5. Step 5: Solve for x
    x = 18,331.45/134.12
  6. Step 6: Final answer
    x = 136.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.