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Finding the Fourth Proportional to 146,920.80, 220,413.60 and 47,085.60

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Solution

The fourth proportional to 146,920.80, 220,413.60 and 47,085.60 is: 70,638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,920.80 : 220,413.60 = 47,085.60 : x
  2. Step 2: Convert to fraction form
    146,920.80/220,413.60 = 47,085.60/x
  3. Step 3: Cross multiply
    146,920.80x = 220,413.60 × 47,085.60
  4. Step 4: Simplify right side
    146,920.80x = 10,378,306,604.16
  5. Step 5: Solve for x
    x = 10,378,306,604.16/146,920.80
  6. Step 6: Final answer
    x = 70,638.78

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1.5x scale

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.