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Finding the Fourth Proportional to 12,303,165.66, 16,978,884.42 and 7,076,175.32

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Solution

The fourth proportional to 12,303,165.66, 16,978,884.42 and 7,076,175.32 is: 9,765,418.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303,165.66 : 16,978,884.42 = 7,076,175.32 : x
  2. Step 2: Convert to fraction form
    12,303,165.66/16,978,884.42 = 7,076,175.32/x
  3. Step 3: Cross multiply
    12,303,165.66x = 16,978,884.42 × 7,076,175.32
  4. Step 4: Simplify right side
    12,303,165.66x = 120,145,562,893,936.53
  5. Step 5: Solve for x
    x = 120,145,562,893,936.53/12,303,165.66
  6. Step 6: Final answer
    x = 9,765,418.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.