Home / 204,047.14-306,022.11-85,720.78

Finding the Fourth Proportional to 204,047.14, 306,022.11 and 85,720.78

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Solution

The fourth proportional to 204,047.14, 306,022.11 and 85,720.78 is: 128,560.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,047.14 : 306,022.11 = 85,720.78 : x
  2. Step 2: Convert to fraction form
    204,047.14/306,022.11 = 85,720.78/x
  3. Step 3: Cross multiply
    204,047.14x = 306,022.11 × 85,720.78
  4. Step 4: Simplify right side
    204,047.14x = 26,232,453,966.45
  5. Step 5: Solve for x
    x = 26,232,453,966.45/204,047.14
  6. Step 6: Final answer
    x = 128,560.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.