Home / 259,670.12-389,445.03-82,144.04

Finding the Fourth Proportional to 259,670.12, 389,445.03 and 82,144.04

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Solution

The fourth proportional to 259,670.12, 389,445.03 and 82,144.04 is: 123,197.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,670.12 : 389,445.03 = 82,144.04 : x
  2. Step 2: Convert to fraction form
    259,670.12/389,445.03 = 82,144.04/x
  3. Step 3: Cross multiply
    259,670.12x = 389,445.03 × 82,144.04
  4. Step 4: Simplify right side
    259,670.12x = 31,990,586,174.90
  5. Step 5: Solve for x
    x = 31,990,586,174.90/259,670.12
  6. Step 6: Final answer
    x = 123,197.03

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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.