Home / 208,629.92-312,988.44-68,377.52

Finding the Fourth Proportional to 208,629.92, 312,988.44 and 68,377.52

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Solution

The fourth proportional to 208,629.92, 312,988.44 and 68,377.52 is: 102,580.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,629.92 : 312,988.44 = 68,377.52 : x
  2. Step 2: Convert to fraction form
    208,629.92/312,988.44 = 68,377.52/x
  3. Step 3: Cross multiply
    208,629.92x = 312,988.44 × 68,377.52
  4. Step 4: Simplify right side
    208,629.92x = 21,401,373,315.87
  5. Step 5: Solve for x
    x = 21,401,373,315.87/208,629.92
  6. Step 6: Final answer
    x = 102,580.56

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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.