Home / 312,757.25-469,131.61-76,100.16

Finding the Fourth Proportional to 312,757.25, 469,131.61 and 76,100.16

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Solution

The fourth proportional to 312,757.25, 469,131.61 and 76,100.16 is: 114,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,757.25 : 469,131.61 = 76,100.16 : x
  2. Step 2: Convert to fraction form
    312,757.25/469,131.61 = 76,100.16/x
  3. Step 3: Cross multiply
    312,757.25x = 469,131.61 × 76,100.16
  4. Step 4: Simplify right side
    312,757.25x = 35,700,990,582.06
  5. Step 5: Solve for x
    x = 35,700,990,582.06/312,757.25
  6. Step 6: Final answer
    x = 114,149.20

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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.