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Finding the Fourth Proportional to 136.87, 188.44 and 130.03

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Solution

The fourth proportional to 136.87, 188.44 and 130.03 is: 179.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.87 : 188.44 = 130.03 : x
  2. Step 2: Convert to fraction form
    136.87/188.44 = 130.03/x
  3. Step 3: Cross multiply
    136.87x = 188.44 × 130.03
  4. Step 4: Simplify right side
    136.87x = 24,502.85
  5. Step 5: Solve for x
    x = 24,502.85/136.87
  6. Step 6: Final answer
    x = 179.02

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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.