Home / 138,096.78-190,544.99-80,725.02

Finding the Fourth Proportional to 138,096.78, 190,544.99 and 80,725.02

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Solution

The fourth proportional to 138,096.78, 190,544.99 and 80,725.02 is: 111,383.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,096.78 : 190,544.99 = 80,725.02 : x
  2. Step 2: Convert to fraction form
    138,096.78/190,544.99 = 80,725.02/x
  3. Step 3: Cross multiply
    138,096.78x = 190,544.99 × 80,725.02
  4. Step 4: Simplify right side
    138,096.78x = 15,381,747,725.02
  5. Step 5: Solve for x
    x = 15,381,747,725.02/138,096.78
  6. Step 6: Final answer
    x = 111,383.83

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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.