Home / 139,739.36-192,413.21-105,334.07

Finding the Fourth Proportional to 139,739.36, 192,413.21 and 105,334.07

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Solution

The fourth proportional to 139,739.36, 192,413.21 and 105,334.07 is: 145,039.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739.36 : 192,413.21 = 105,334.07 : x
  2. Step 2: Convert to fraction form
    139,739.36/192,413.21 = 105,334.07/x
  3. Step 3: Cross multiply
    139,739.36x = 192,413.21 × 105,334.07
  4. Step 4: Simplify right side
    139,739.36x = 20,267,665,042.33
  5. Step 5: Solve for x
    x = 20,267,665,042.33/139,739.36
  6. Step 6: Final answer
    x = 145,039.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.