Home / 170,413.30-255,617.55-76,918.90

Finding the Fourth Proportional to 170,413.30, 255,617.55 and 76,918.90

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Solution

The fourth proportional to 170,413.30, 255,617.55 and 76,918.90 is: 115,377.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,413.30 : 255,617.55 = 76,918.90 : x
  2. Step 2: Convert to fraction form
    170,413.30/255,617.55 = 76,918.90/x
  3. Step 3: Cross multiply
    170,413.30x = 255,617.55 × 76,918.90
  4. Step 4: Simplify right side
    170,413.30x = 19,661,820,766.70
  5. Step 5: Solve for x
    x = 19,661,820,766.70/170,413.30
  6. Step 6: Final answer
    x = 115,377.27

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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.