Home / 82,170.20-123,095.40-54,005.30

Finding the Fourth Proportional to 82,170.20, 123,095.40 and 54,005.30

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Solution

The fourth proportional to 82,170.20, 123,095.40 and 54,005.30 is: 80,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,170.20 : 123,095.40 = 54,005.30 : x
  2. Step 2: Convert to fraction form
    82,170.20/123,095.40 = 54,005.30/x
  3. Step 3: Cross multiply
    82,170.20x = 123,095.40 × 54,005.30
  4. Step 4: Simplify right side
    82,170.20x = 6,647,804,005.62
  5. Step 5: Solve for x
    x = 6,647,804,005.62/82,170.20
  6. Step 6: Final answer
    x = 80,902.86

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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.