Home / 208,664.80-312,918.56-75,512.16

Finding the Fourth Proportional to 208,664.80, 312,918.56 and 75,512.16

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Solution

The fourth proportional to 208,664.80, 312,918.56 and 75,512.16 is: 113,239.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,664.80 : 312,918.56 = 75,512.16 : x
  2. Step 2: Convert to fraction form
    208,664.80/312,918.56 = 75,512.16/x
  3. Step 3: Cross multiply
    208,664.80x = 312,918.56 × 75,512.16
  4. Step 4: Simplify right side
    208,664.80x = 23,629,156,369.69
  5. Step 5: Solve for x
    x = 23,629,156,369.69/208,664.80
  6. Step 6: Final answer
    x = 113,239.78

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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.