Home / 136,909.64-188,933.18-76,481.12

Finding the Fourth Proportional to 136,909.64, 188,933.18 and 76,481.12

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Solution

The fourth proportional to 136,909.64, 188,933.18 and 76,481.12 is: 105,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,909.64 : 188,933.18 = 76,481.12 : x
  2. Step 2: Convert to fraction form
    136,909.64/188,933.18 = 76,481.12/x
  3. Step 3: Cross multiply
    136,909.64x = 188,933.18 × 76,481.12
  4. Step 4: Simplify right side
    136,909.64x = 14,449,821,211.56
  5. Step 5: Solve for x
    x = 14,449,821,211.56/136,909.64
  6. Step 6: Final answer
    x = 105,542.76

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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.