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Finding the Fourth Proportional to 136.85, 188.07 and 130.51

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Solution

The fourth proportional to 136.85, 188.07 and 130.51 is: 179.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.85 : 188.07 = 130.51 : x
  2. Step 2: Convert to fraction form
    136.85/188.07 = 130.51/x
  3. Step 3: Cross multiply
    136.85x = 188.07 × 130.51
  4. Step 4: Simplify right side
    136.85x = 24,543.42
  5. Step 5: Solve for x
    x = 24,543.42/136.85
  6. Step 6: Final answer
    x = 179.35

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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.