Home / 204,072.85-306,112.38-77,720.09

Finding the Fourth Proportional to 204,072.85, 306,112.38 and 77,720.09

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Solution

The fourth proportional to 204,072.85, 306,112.38 and 77,720.09 is: 116,581.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,072.85 : 306,112.38 = 77,720.09 : x
  2. Step 2: Convert to fraction form
    204,072.85/306,112.38 = 77,720.09/x
  3. Step 3: Cross multiply
    204,072.85x = 306,112.38 × 77,720.09
  4. Step 4: Simplify right side
    204,072.85x = 23,791,082,060.76
  5. Step 5: Solve for x
    x = 23,791,082,060.76/204,072.85
  6. Step 6: Final answer
    x = 116,581.32

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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.