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Finding the Fourth Proportional to 100.08, 149.14 and 94.32

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Solution

The fourth proportional to 100.08, 149.14 and 94.32 is: 140.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.08 : 149.14 = 94.32 : x
  2. Step 2: Convert to fraction form
    100.08/149.14 = 94.32/x
  3. Step 3: Cross multiply
    100.08x = 149.14 × 94.32
  4. Step 4: Simplify right side
    100.08x = 14,066.88
  5. Step 5: Solve for x
    x = 14,066.88/100.08
  6. Step 6: Final answer
    x = 140.56

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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.