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Finding the Fourth Proportional to 104,193.97, 143,786.78 and 56,447.21

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Solution

The fourth proportional to 104,193.97, 143,786.78 and 56,447.21 is: 77,896.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,193.97 : 143,786.78 = 56,447.21 : x
  2. Step 2: Convert to fraction form
    104,193.97/143,786.78 = 56,447.21/x
  3. Step 3: Cross multiply
    104,193.97x = 143,786.78 × 56,447.21
  4. Step 4: Simplify right side
    104,193.97x = 8,116,362,004.43
  5. Step 5: Solve for x
    x = 8,116,362,004.43/104,193.97
  6. Step 6: Final answer
    x = 77,896.66

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1.5x scale

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.