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Finding the Fourth Proportional to 140,662.80, 210,961.08 and 40,796.64

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Solution

The fourth proportional to 140,662.80, 210,961.08 and 40,796.64 is: 61,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,662.80 : 210,961.08 = 40,796.64 : x
  2. Step 2: Convert to fraction form
    140,662.80/210,961.08 = 40,796.64/x
  3. Step 3: Cross multiply
    140,662.80x = 210,961.08 × 40,796.64
  4. Step 4: Simplify right side
    140,662.80x = 8,606,503,234.77
  5. Step 5: Solve for x
    x = 8,606,503,234.77/140,662.80
  6. Step 6: Final answer
    x = 61,185.35

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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.