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Finding the Fourth Proportional to 171,857.65, 257,815.03 and 72,025.35

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Solution

The fourth proportional to 171,857.65, 257,815.03 and 72,025.35 is: 108,049.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,857.65 : 257,815.03 = 72,025.35 : x
  2. Step 2: Convert to fraction form
    171,857.65/257,815.03 = 72,025.35/x
  3. Step 3: Cross multiply
    171,857.65x = 257,815.03 × 72,025.35
  4. Step 4: Simplify right side
    171,857.65x = 18,569,217,771.01
  5. Step 5: Solve for x
    x = 18,569,217,771.01/171,857.65
  6. Step 6: Final answer
    x = 108,049.99

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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.