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Finding the Fourth Proportional to 173,939.10, 260,920.80 and 68,744.40

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Solution

The fourth proportional to 173,939.10, 260,920.80 and 68,744.40 is: 103,121.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,939.10 : 260,920.80 = 68,744.40 : x
  2. Step 2: Convert to fraction form
    173,939.10/260,920.80 = 68,744.40/x
  3. Step 3: Cross multiply
    173,939.10x = 260,920.80 × 68,744.40
  4. Step 4: Simplify right side
    173,939.10x = 17,936,843,843.52
  5. Step 5: Solve for x
    x = 17,936,843,843.52/173,939.10
  6. Step 6: Final answer
    x = 103,121.40

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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.