Home / 136,917.64-188,944.26-76,489.15

Finding the Fourth Proportional to 136,917.64, 188,944.26 and 76,489.15

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Solution

The fourth proportional to 136,917.64, 188,944.26 and 76,489.15 is: 105,553.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,917.64 : 188,944.26 = 76,489.15 : x
  2. Step 2: Convert to fraction form
    136,917.64/188,944.26 = 76,489.15/x
  3. Step 3: Cross multiply
    136,917.64x = 188,944.26 × 76,489.15
  4. Step 4: Simplify right side
    136,917.64x = 14,452,185,844.78
  5. Step 5: Solve for x
    x = 14,452,185,844.78/136,917.64
  6. Step 6: Final answer
    x = 105,553.86

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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.