Home / 206,511.27-309,796.45-91,234.16

Finding the Fourth Proportional to 206,511.27, 309,796.45 and 91,234.16

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Solution

The fourth proportional to 206,511.27, 309,796.45 and 91,234.16 is: 136,864.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,511.27 : 309,796.45 = 91,234.16 : x
  2. Step 2: Convert to fraction form
    206,511.27/309,796.45 = 91,234.16/x
  3. Step 3: Cross multiply
    206,511.27x = 309,796.45 × 91,234.16
  4. Step 4: Simplify right side
    206,511.27x = 28,264,018,271.40
  5. Step 5: Solve for x
    x = 28,264,018,271.40/206,511.27
  6. Step 6: Final answer
    x = 136,864.29

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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.