Home / 258,997.25-387,765.45-137,141.66

Finding the Fourth Proportional to 258,997.25, 387,765.45 and 137,141.66

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Solution

The fourth proportional to 258,997.25, 387,765.45 and 137,141.66 is: 205,325.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,997.25 : 387,765.45 = 137,141.66 : x
  2. Step 2: Convert to fraction form
    258,997.25/387,765.45 = 137,141.66/x
  3. Step 3: Cross multiply
    258,997.25x = 387,765.45 × 137,141.66
  4. Step 4: Simplify right side
    258,997.25x = 53,178,795,564.82
  5. Step 5: Solve for x
    x = 53,178,795,564.82/258,997.25
  6. Step 6: Final answer
    x = 205,325.72

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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.