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Finding the Fourth Proportional to 172,938, 259,414.96 and 52,986.36

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Solution

The fourth proportional to 172,938, 259,414.96 and 52,986.36 is: 79,481.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,938 : 259,414.96 = 52,986.36 : x
  2. Step 2: Convert to fraction form
    172,938/259,414.96 = 52,986.36/x
  3. Step 3: Cross multiply
    172,938x = 259,414.96 × 52,986.36
  4. Step 4: Simplify right side
    172,938x = 13,745,454,459.95
  5. Step 5: Solve for x
    x = 13,745,454,459.95/172,938
  6. Step 6: Final answer
    x = 79,481.98

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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.