Home / 90,738.14-136,107.21-28,413.50

Finding the Fourth Proportional to 90,738.14, 136,107.21 and 28,413.50

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Solution

The fourth proportional to 90,738.14, 136,107.21 and 28,413.50 is: 42,620.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,738.14 : 136,107.21 = 28,413.50 : x
  2. Step 2: Convert to fraction form
    90,738.14/136,107.21 = 28,413.50/x
  3. Step 3: Cross multiply
    90,738.14x = 136,107.21 × 28,413.50
  4. Step 4: Simplify right side
    90,738.14x = 3,867,282,211.34
  5. Step 5: Solve for x
    x = 3,867,282,211.34/90,738.14
  6. Step 6: Final answer
    x = 42,620.25

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Similar ratio
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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.