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Finding the Fourth Proportional to 141.50, 195.45 and 100.25

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Solution

The fourth proportional to 141.50, 195.45 and 100.25 is: 138.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.50 : 195.45 = 100.25 : x
  2. Step 2: Convert to fraction form
    141.50/195.45 = 100.25/x
  3. Step 3: Cross multiply
    141.50x = 195.45 × 100.25
  4. Step 4: Simplify right side
    141.50x = 19,593.36
  5. Step 5: Solve for x
    x = 19,593.36/141.50
  6. Step 6: Final answer
    x = 138.47

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