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Finding the Fourth Proportional to 136,672.62, 188,608.50 and 76,241.76

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Solution

The fourth proportional to 136,672.62, 188,608.50 and 76,241.76 is: 105,213.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,672.62 : 188,608.50 = 76,241.76 : x
  2. Step 2: Convert to fraction form
    136,672.62/188,608.50 = 76,241.76/x
  3. Step 3: Cross multiply
    136,672.62x = 188,608.50 × 76,241.76
  4. Step 4: Simplify right side
    136,672.62x = 14,379,843,990.96
  5. Step 5: Solve for x
    x = 14,379,843,990.96/136,672.62
  6. Step 6: Final answer
    x = 105,213.79

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1.5x scale

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.