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Finding the Fourth Proportional to 173,148.70, 259,723.05 and 137,719.30

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Solution

The fourth proportional to 173,148.70, 259,723.05 and 137,719.30 is: 206,578.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,148.70 : 259,723.05 = 137,719.30 : x
  2. Step 2: Convert to fraction form
    173,148.70/259,723.05 = 137,719.30/x
  3. Step 3: Cross multiply
    173,148.70x = 259,723.05 × 137,719.30
  4. Step 4: Simplify right side
    173,148.70x = 35,768,876,639.87
  5. Step 5: Solve for x
    x = 35,768,876,639.87/173,148.70
  6. Step 6: Final answer
    x = 206,578.95

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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.