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Finding the Fourth Proportional to 101.55, 139.93 and 94.66

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Solution

The fourth proportional to 101.55, 139.93 and 94.66 is: 130.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.55 : 139.93 = 94.66 : x
  2. Step 2: Convert to fraction form
    101.55/139.93 = 94.66/x
  3. Step 3: Cross multiply
    101.55x = 139.93 × 94.66
  4. Step 4: Simplify right side
    101.55x = 13,245.77
  5. Step 5: Solve for x
    x = 13,245.77/101.55
  6. Step 6: Final answer
    x = 130.44

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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.