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Finding the Fourth Proportional to 141.01, 210.13 and 131.90

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Solution

The fourth proportional to 141.01, 210.13 and 131.90 is: 196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.01 : 210.13 = 131.90 : x
  2. Step 2: Convert to fraction form
    141.01/210.13 = 131.90/x
  3. Step 3: Cross multiply
    141.01x = 210.13 × 131.90
  4. Step 4: Simplify right side
    141.01x = 27,716.15
  5. Step 5: Solve for x
    x = 27,716.15/141.01
  6. Step 6: Final answer
    x = 196.55

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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.