Home / 206,127.20-309,064.44-87,731.12

Finding the Fourth Proportional to 206,127.20, 309,064.44 and 87,731.12

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Solution

The fourth proportional to 206,127.20, 309,064.44 and 87,731.12 is: 131,542.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,127.20 : 309,064.44 = 87,731.12 : x
  2. Step 2: Convert to fraction form
    206,127.20/309,064.44 = 87,731.12/x
  3. Step 3: Cross multiply
    206,127.20x = 309,064.44 × 87,731.12
  4. Step 4: Simplify right side
    206,127.20x = 27,114,569,473.37
  5. Step 5: Solve for x
    x = 27,114,569,473.37/206,127.20
  6. Step 6: Final answer
    x = 131,542.90

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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.