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Finding the Fourth Proportional to 181,306.80, 271,960.20 and 139,834.80

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Solution

The fourth proportional to 181,306.80, 271,960.20 and 139,834.80 is: 209,752.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,306.80 : 271,960.20 = 139,834.80 : x
  2. Step 2: Convert to fraction form
    181,306.80/271,960.20 = 139,834.80/x
  3. Step 3: Cross multiply
    181,306.80x = 271,960.20 × 139,834.80
  4. Step 4: Simplify right side
    181,306.80x = 38,029,500,174.96
  5. Step 5: Solve for x
    x = 38,029,500,174.96/181,306.80
  6. Step 6: Final answer
    x = 209,752.20

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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.