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Finding the Fourth Proportional to 173,689.60, 260,469.60 and 68,486.80

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Solution

The fourth proportional to 173,689.60, 260,469.60 and 68,486.80 is: 102,704.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,689.60 : 260,469.60 = 68,486.80 : x
  2. Step 2: Convert to fraction form
    173,689.60/260,469.60 = 68,486.80/x
  3. Step 3: Cross multiply
    173,689.60x = 260,469.60 × 68,486.80
  4. Step 4: Simplify right side
    173,689.60x = 17,838,729,401.28
  5. Step 5: Solve for x
    x = 17,838,729,401.28/173,689.60
  6. Step 6: Final answer
    x = 102,704.65

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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.