Home / 221,413.51-305,554.17-120,811.51

Finding the Fourth Proportional to 221,413.51, 305,554.17 and 120,811.51

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Solution

The fourth proportional to 221,413.51, 305,554.17 and 120,811.51 is: 166,721.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,413.51 : 305,554.17 = 120,811.51 : x
  2. Step 2: Convert to fraction form
    221,413.51/305,554.17 = 120,811.51/x
  3. Step 3: Cross multiply
    221,413.51x = 305,554.17 × 120,811.51
  4. Step 4: Simplify right side
    221,413.51x = 36,914,460,664.50
  5. Step 5: Solve for x
    x = 36,914,460,664.50/221,413.51
  6. Step 6: Final answer
    x = 166,721.81

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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.