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Finding the Fourth Proportional to 130.06, 194.62 and 102.72

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Solution

The fourth proportional to 130.06, 194.62 and 102.72 is: 153.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.06 : 194.62 = 102.72 : x
  2. Step 2: Convert to fraction form
    130.06/194.62 = 102.72/x
  3. Step 3: Cross multiply
    130.06x = 194.62 × 102.72
  4. Step 4: Simplify right side
    130.06x = 19,991.37
  5. Step 5: Solve for x
    x = 19,991.37/130.06
  6. Step 6: Final answer
    x = 153.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.