Home / 259,104.72-388,671.01-81,625.62

Finding the Fourth Proportional to 259,104.72, 388,671.01 and 81,625.62

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Solution

The fourth proportional to 259,104.72, 388,671.01 and 81,625.62 is: 122,442.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,104.72 : 388,671.01 = 81,625.62 : x
  2. Step 2: Convert to fraction form
    259,104.72/388,671.01 = 81,625.62/x
  3. Step 3: Cross multiply
    259,104.72x = 388,671.01 × 81,625.62
  4. Step 4: Simplify right side
    259,104.72x = 31,725,513,420.73
  5. Step 5: Solve for x
    x = 31,725,513,420.73/259,104.72
  6. Step 6: Final answer
    x = 122,442.82

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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.