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Finding the Fourth Proportional to 199,745.82, 299,619.86 and 66,625.71

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Solution

The fourth proportional to 199,745.82, 299,619.86 and 66,625.71 is: 99,938.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,745.82 : 299,619.86 = 66,625.71 : x
  2. Step 2: Convert to fraction form
    199,745.82/299,619.86 = 66,625.71/x
  3. Step 3: Cross multiply
    199,745.82x = 299,619.86 × 66,625.71
  4. Step 4: Simplify right side
    199,745.82x = 19,962,385,902.60
  5. Step 5: Solve for x
    x = 19,962,385,902.60/199,745.82
  6. Step 6: Final answer
    x = 99,938.94

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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.