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Finding the Fourth Proportional to 139,993.80, 209,990.70 and 92,754.60

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Solution

The fourth proportional to 139,993.80, 209,990.70 and 92,754.60 is: 139,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,993.80 : 209,990.70 = 92,754.60 : x
  2. Step 2: Convert to fraction form
    139,993.80/209,990.70 = 92,754.60/x
  3. Step 3: Cross multiply
    139,993.80x = 209,990.70 × 92,754.60
  4. Step 4: Simplify right side
    139,993.80x = 19,477,603,382.22
  5. Step 5: Solve for x
    x = 19,477,603,382.22/139,993.80
  6. Step 6: Final answer
    x = 139,131.90

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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.