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Finding the Fourth Proportional to 207,183.32, 310,776.78 and 66,941.96

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Solution

The fourth proportional to 207,183.32, 310,776.78 and 66,941.96 is: 100,413.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,183.32 : 310,776.78 = 66,941.96 : x
  2. Step 2: Convert to fraction form
    207,183.32/310,776.78 = 66,941.96/x
  3. Step 3: Cross multiply
    207,183.32x = 310,776.78 × 66,941.96
  4. Step 4: Simplify right side
    207,183.32x = 20,804,006,775.69
  5. Step 5: Solve for x
    x = 20,804,006,775.69/207,183.32
  6. Step 6: Final answer
    x = 100,413.52

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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.