Home / 206,276.49-309,175.27-78,111.27

Finding the Fourth Proportional to 206,276.49, 309,175.27 and 78,111.27

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Solution

The fourth proportional to 206,276.49, 309,175.27 and 78,111.27 is: 117,076.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,276.49 : 309,175.27 = 78,111.27 : x
  2. Step 2: Convert to fraction form
    206,276.49/309,175.27 = 78,111.27/x
  3. Step 3: Cross multiply
    206,276.49x = 309,175.27 × 78,111.27
  4. Step 4: Simplify right side
    206,276.49x = 24,150,072,992.29
  5. Step 5: Solve for x
    x = 24,150,072,992.29/206,276.49
  6. Step 6: Final answer
    x = 117,076.23

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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.