Home / 143,413.13-215,111.50-54,675.61

Finding the Fourth Proportional to 143,413.13, 215,111.50 and 54,675.61

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Solution

The fourth proportional to 143,413.13, 215,111.50 and 54,675.61 is: 82,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,413.13 : 215,111.50 = 54,675.61 : x
  2. Step 2: Convert to fraction form
    143,413.13/215,111.50 = 54,675.61/x
  3. Step 3: Cross multiply
    143,413.13x = 215,111.50 × 54,675.61
  4. Step 4: Simplify right side
    143,413.13x = 11,761,351,806.05
  5. Step 5: Solve for x
    x = 11,761,351,806.05/143,413.13
  6. Step 6: Final answer
    x = 82,010.28

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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.