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Finding the Fourth Proportional to 141.51, 193.88 and 136.05

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Solution

The fourth proportional to 141.51, 193.88 and 136.05 is: 186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.51 : 193.88 = 136.05 : x
  2. Step 2: Convert to fraction form
    141.51/193.88 = 136.05/x
  3. Step 3: Cross multiply
    141.51x = 193.88 × 136.05
  4. Step 4: Simplify right side
    141.51x = 26,376.22
  5. Step 5: Solve for x
    x = 26,376.22/141.51
  6. Step 6: Final answer
    x = 186.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.