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Finding the Fourth Proportional to 173,136.30, 259,704.45 and 139,310.70

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Solution

The fourth proportional to 173,136.30, 259,704.45 and 139,310.70 is: 208,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,136.30 : 259,704.45 = 139,310.70 : x
  2. Step 2: Convert to fraction form
    173,136.30/259,704.45 = 139,310.70/x
  3. Step 3: Cross multiply
    173,136.30x = 259,704.45 × 139,310.70
  4. Step 4: Simplify right side
    173,136.30x = 36,179,608,722.62
  5. Step 5: Solve for x
    x = 36,179,608,722.62/173,136.30
  6. Step 6: Final answer
    x = 208,966.05

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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.