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Finding the Fourth Proportional to 141.53, 195.30 and 79.35

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Solution

The fourth proportional to 141.53, 195.30 and 79.35 is: 109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.53 : 195.30 = 79.35 : x
  2. Step 2: Convert to fraction form
    141.53/195.30 = 79.35/x
  3. Step 3: Cross multiply
    141.53x = 195.30 × 79.35
  4. Step 4: Simplify right side
    141.53x = 15,497.06
  5. Step 5: Solve for x
    x = 15,497.06/141.53
  6. Step 6: Final answer
    x = 109.50

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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.