Home / 82,135.04-123,201.48-19,805

Finding the Fourth Proportional to 82,135.04, 123,201.48 and 19,805

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Solution

The fourth proportional to 82,135.04, 123,201.48 and 19,805 is: 29,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,135.04 : 123,201.48 = 19,805 : x
  2. Step 2: Convert to fraction form
    82,135.04/123,201.48 = 19,805/x
  3. Step 3: Cross multiply
    82,135.04x = 123,201.48 × 19,805
  4. Step 4: Simplify right side
    82,135.04x = 2,440,005,311.40
  5. Step 5: Solve for x
    x = 2,440,005,311.40/82,135.04
  6. Step 6: Final answer
    x = 29,707.24

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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.