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Finding the Fourth Proportional to 180,791.80, 271,230.90 and 87,220.60

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Solution

The fourth proportional to 180,791.80, 271,230.90 and 87,220.60 is: 130,851.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,791.80 : 271,230.90 = 87,220.60 : x
  2. Step 2: Convert to fraction form
    180,791.80/271,230.90 = 87,220.60/x
  3. Step 3: Cross multiply
    180,791.80x = 271,230.90 × 87,220.60
  4. Step 4: Simplify right side
    180,791.80x = 23,656,921,836.54
  5. Step 5: Solve for x
    x = 23,656,921,836.54/180,791.80
  6. Step 6: Final answer
    x = 130,851.74

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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.