Home / 258,768.06-387,899.79-123,796.89

Finding the Fourth Proportional to 258,768.06, 387,899.79 and 123,796.89

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Solution

The fourth proportional to 258,768.06, 387,899.79 and 123,796.89 is: 185,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,768.06 : 387,899.79 = 123,796.89 : x
  2. Step 2: Convert to fraction form
    258,768.06/387,899.79 = 123,796.89/x
  3. Step 3: Cross multiply
    258,768.06x = 387,899.79 × 123,796.89
  4. Step 4: Simplify right side
    258,768.06x = 48,020,787,633.65
  5. Step 5: Solve for x
    x = 48,020,787,633.65/258,768.06
  6. Step 6: Final answer
    x = 185,574.63

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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.