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Finding the Fourth Proportional to 104,139.44, 143,713.11 and 56,392.79

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Solution

The fourth proportional to 104,139.44, 143,713.11 and 56,392.79 is: 77,822.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,139.44 : 143,713.11 = 56,392.79 : x
  2. Step 2: Convert to fraction form
    104,139.44/143,713.11 = 56,392.79/x
  3. Step 3: Cross multiply
    104,139.44x = 143,713.11 × 56,392.79
  4. Step 4: Simplify right side
    104,139.44x = 8,104,383,232.48
  5. Step 5: Solve for x
    x = 8,104,383,232.48/104,139.44
  6. Step 6: Final answer
    x = 77,822.42

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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.