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Finding the Fourth Proportional to 181,287, 271,736.10 and 87,586.20

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Solution

The fourth proportional to 181,287, 271,736.10 and 87,586.20 is: 131,285.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,287 : 271,736.10 = 87,586.20 : x
  2. Step 2: Convert to fraction form
    181,287/271,736.10 = 87,586.20/x
  3. Step 3: Cross multiply
    181,287x = 271,736.10 × 87,586.20
  4. Step 4: Simplify right side
    181,287x = 23,800,332,401.82
  5. Step 5: Solve for x
    x = 23,800,332,401.82/181,287
  6. Step 6: Final answer
    x = 131,285.38

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1.5x scale

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.