Home / 208,731.09-313,133.82-66,607.56

Finding the Fourth Proportional to 208,731.09, 313,133.82 and 66,607.56

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Solution

The fourth proportional to 208,731.09, 313,133.82 and 66,607.56 is: 99,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,731.09 : 313,133.82 = 66,607.56 : x
  2. Step 2: Convert to fraction form
    208,731.09/313,133.82 = 66,607.56/x
  3. Step 3: Cross multiply
    208,731.09x = 313,133.82 × 66,607.56
  4. Step 4: Simplify right side
    208,731.09x = 20,857,079,703.68
  5. Step 5: Solve for x
    x = 20,857,079,703.68/208,731.09
  6. Step 6: Final answer
    x = 99,923.21

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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.