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Finding the Fourth Proportional to 172,251.50, 257,389.11 and 131,499.48

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Solution

The fourth proportional to 172,251.50, 257,389.11 and 131,499.48 is: 196,494.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,251.50 : 257,389.11 = 131,499.48 : x
  2. Step 2: Convert to fraction form
    172,251.50/257,389.11 = 131,499.48/x
  3. Step 3: Cross multiply
    172,251.50x = 257,389.11 × 131,499.48
  4. Step 4: Simplify right side
    172,251.50x = 33,846,535,087.87
  5. Step 5: Solve for x
    x = 33,846,535,087.87/172,251.50
  6. Step 6: Final answer
    x = 196,494.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.