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Finding the Fourth Proportional to 141.51, 195.08 and 99.94

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Solution

The fourth proportional to 141.51, 195.08 and 99.94 is: 137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.51 : 195.08 = 99.94 : x
  2. Step 2: Convert to fraction form
    141.51/195.08 = 99.94/x
  3. Step 3: Cross multiply
    141.51x = 195.08 × 99.94
  4. Step 4: Simplify right side
    141.51x = 19,494.82
  5. Step 5: Solve for x
    x = 19,494.82/141.51
  6. Step 6: Final answer
    x = 137.76

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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.