Home / 104,286.78-143,915.13-56,539.98

Finding the Fourth Proportional to 104,286.78, 143,915.13 and 56,539.98

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Solution

The fourth proportional to 104,286.78, 143,915.13 and 56,539.98 is: 78,024.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,286.78 : 143,915.13 = 56,539.98 : x
  2. Step 2: Convert to fraction form
    104,286.78/143,915.13 = 56,539.98/x
  3. Step 3: Cross multiply
    104,286.78x = 143,915.13 × 56,539.98
  4. Step 4: Simplify right side
    104,286.78x = 8,136,958,571.90
  5. Step 5: Solve for x
    x = 8,136,958,571.90/104,286.78
  6. Step 6: Final answer
    x = 78,024.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.