Home / 259,867.72-389,838.50-79,968.04

Finding the Fourth Proportional to 259,867.72, 389,838.50 and 79,968.04

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Solution

The fourth proportional to 259,867.72, 389,838.50 and 79,968.04 is: 119,963.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,867.72 : 389,838.50 = 79,968.04 : x
  2. Step 2: Convert to fraction form
    259,867.72/389,838.50 = 79,968.04/x
  3. Step 3: Cross multiply
    259,867.72x = 389,838.50 × 79,968.04
  4. Step 4: Simplify right side
    259,867.72x = 31,174,620,761.54
  5. Step 5: Solve for x
    x = 31,174,620,761.54/259,867.72
  6. Step 6: Final answer
    x = 119,963.42

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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.