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Finding the Fourth Proportional to 181,540.80, 271,663.20 and 115,012.80

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Solution

The fourth proportional to 181,540.80, 271,663.20 and 115,012.80 is: 172,108.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,540.80 : 271,663.20 = 115,012.80 : x
  2. Step 2: Convert to fraction form
    181,540.80/271,663.20 = 115,012.80/x
  3. Step 3: Cross multiply
    181,540.80x = 271,663.20 × 115,012.80
  4. Step 4: Simplify right side
    181,540.80x = 31,244,745,288.96
  5. Step 5: Solve for x
    x = 31,244,745,288.96/181,540.80
  6. Step 6: Final answer
    x = 172,108.67

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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.