Home / 139,208.75-192,108.21-75,546.56

Finding the Fourth Proportional to 139,208.75, 192,108.21 and 75,546.56

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Solution

The fourth proportional to 139,208.75, 192,108.21 and 75,546.56 is: 104,254.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,208.75 : 192,108.21 = 75,546.56 : x
  2. Step 2: Convert to fraction form
    139,208.75/192,108.21 = 75,546.56/x
  3. Step 3: Cross multiply
    139,208.75x = 192,108.21 × 75,546.56
  4. Step 4: Simplify right side
    139,208.75x = 14,513,114,413.26
  5. Step 5: Solve for x
    x = 14,513,114,413.26/139,208.75
  6. Step 6: Final answer
    x = 104,254.33

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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.