Home / 131,985.20-197,977.80-82,218.80

Finding the Fourth Proportional to 131,985.20, 197,977.80 and 82,218.80

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Solution

The fourth proportional to 131,985.20, 197,977.80 and 82,218.80 is: 123,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,985.20 : 197,977.80 = 82,218.80 : x
  2. Step 2: Convert to fraction form
    131,985.20/197,977.80 = 82,218.80/x
  3. Step 3: Cross multiply
    131,985.20x = 197,977.80 × 82,218.80
  4. Step 4: Simplify right side
    131,985.20x = 16,277,497,142.64
  5. Step 5: Solve for x
    x = 16,277,497,142.64/131,985.20
  6. Step 6: Final answer
    x = 123,328.20

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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.