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Finding the Fourth Proportional to 101.23, 140.60 and 98.35

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Solution

The fourth proportional to 101.23, 140.60 and 98.35 is: 136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.23 : 140.60 = 98.35 : x
  2. Step 2: Convert to fraction form
    101.23/140.60 = 98.35/x
  3. Step 3: Cross multiply
    101.23x = 140.60 × 98.35
  4. Step 4: Simplify right side
    101.23x = 13,827.90
  5. Step 5: Solve for x
    x = 13,827.90/101.23
  6. Step 6: Final answer
    x = 136.60

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.