Home / 205,183.06-307,207.79-105,127.81

Finding the Fourth Proportional to 205,183.06, 307,207.79 and 105,127.81

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Solution

The fourth proportional to 205,183.06, 307,207.79 and 105,127.81 is: 157,401.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,183.06 : 307,207.79 = 105,127.81 : x
  2. Step 2: Convert to fraction form
    205,183.06/307,207.79 = 105,127.81/x
  3. Step 3: Cross multiply
    205,183.06x = 307,207.79 × 105,127.81
  4. Step 4: Simplify right side
    205,183.06x = 32,296,080,115.96
  5. Step 5: Solve for x
    x = 32,296,080,115.96/205,183.06
  6. Step 6: Final answer
    x = 157,401.30

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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.