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Finding the Fourth Proportional to 172,446.08, 237,939.90 and 100,812.20

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Solution

The fourth proportional to 172,446.08, 237,939.90 and 100,812.20 is: 139,099.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,446.08 : 237,939.90 = 100,812.20 : x
  2. Step 2: Convert to fraction form
    172,446.08/237,939.90 = 100,812.20/x
  3. Step 3: Cross multiply
    172,446.08x = 237,939.90 × 100,812.20
  4. Step 4: Simplify right side
    172,446.08x = 23,987,244,786.78
  5. Step 5: Solve for x
    x = 23,987,244,786.78/172,446.08
  6. Step 6: Final answer
    x = 139,099.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.