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Finding the Fourth Proportional to 181,153.20, 271,729.80 and 139,114.20

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Solution

The fourth proportional to 181,153.20, 271,729.80 and 139,114.20 is: 208,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,153.20 : 271,729.80 = 139,114.20 : x
  2. Step 2: Convert to fraction form
    181,153.20/271,729.80 = 139,114.20/x
  3. Step 3: Cross multiply
    181,153.20x = 271,729.80 × 139,114.20
  4. Step 4: Simplify right side
    181,153.20x = 37,801,473,743.16
  5. Step 5: Solve for x
    x = 37,801,473,743.16/181,153.20
  6. Step 6: Final answer
    x = 208,671.30

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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.