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Finding the Fourth Proportional to 139,697,999.20, 195,322,107.20 and 139,697,999.20

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Solution

The fourth proportional to 139,697,999.20, 195,322,107.20 and 139,697,999.20 is: 195,322,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,697,999.20 : 195,322,107.20 = 139,697,999.20 : x
  2. Step 2: Convert to fraction form
    139,697,999.20/195,322,107.20 = 139,697,999.20/x
  3. Step 3: Cross multiply
    139,697,999.20x = 195,322,107.20 × 139,697,999.20
  4. Step 4: Simplify right side
    139,697,999.20x = 27,286,107,575,367,912
  5. Step 5: Solve for x
    x = 27,286,107,575,367,912/139,697,999.20
  6. Step 6: Final answer
    x = 195,322,107.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.