Home / 133,006.20-199,518.30-54,121.80

Finding the Fourth Proportional to 133,006.20, 199,518.30 and 54,121.80

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Solution

The fourth proportional to 133,006.20, 199,518.30 and 54,121.80 is: 81,186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,006.20 : 199,518.30 = 54,121.80 : x
  2. Step 2: Convert to fraction form
    133,006.20/199,518.30 = 54,121.80/x
  3. Step 3: Cross multiply
    133,006.20x = 199,518.30 × 54,121.80
  4. Step 4: Simplify right side
    133,006.20x = 10,798,289,528.94
  5. Step 5: Solve for x
    x = 10,798,289,528.94/133,006.20
  6. Step 6: Final answer
    x = 81,186.36

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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.