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Finding the Fourth Proportional to 172,375.80, 258,563.70 and 162,007.80

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Solution

The fourth proportional to 172,375.80, 258,563.70 and 162,007.80 is: 243,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,375.80 : 258,563.70 = 162,007.80 : x
  2. Step 2: Convert to fraction form
    172,375.80/258,563.70 = 162,007.80/x
  3. Step 3: Cross multiply
    172,375.80x = 258,563.70 × 162,007.80
  4. Step 4: Simplify right side
    172,375.80x = 41,889,336,196.86
  5. Step 5: Solve for x
    x = 41,889,336,196.86/172,375.80
  6. Step 6: Final answer
    x = 243,011.70

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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.