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Finding the Fourth Proportional to 101.66, 140.54 and 94.77

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Solution

The fourth proportional to 101.66, 140.54 and 94.77 is: 131.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.66 : 140.54 = 94.77 : x
  2. Step 2: Convert to fraction form
    101.66/140.54 = 94.77/x
  3. Step 3: Cross multiply
    101.66x = 140.54 × 94.77
  4. Step 4: Simplify right side
    101.66x = 13,318.50
  5. Step 5: Solve for x
    x = 13,318.50/101.66
  6. Step 6: Final answer
    x = 131.02

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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.