Home / 258,049.94-387,074.96-80,572.16

Finding the Fourth Proportional to 258,049.94, 387,074.96 and 80,572.16

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Solution

The fourth proportional to 258,049.94, 387,074.96 and 80,572.16 is: 120,858.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,049.94 : 387,074.96 = 80,572.16 : x
  2. Step 2: Convert to fraction form
    258,049.94/387,074.96 = 80,572.16/x
  3. Step 3: Cross multiply
    258,049.94x = 387,074.96 × 80,572.16
  4. Step 4: Simplify right side
    258,049.94x = 31,187,463,270.88
  5. Step 5: Solve for x
    x = 31,187,463,270.88/258,049.94
  6. Step 6: Final answer
    x = 120,858.25

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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.