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Finding the Fourth Proportional to 104,305.93, 143,936.16 and 61,278.73

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Solution

The fourth proportional to 104,305.93, 143,936.16 and 61,278.73 is: 84,561.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,305.93 : 143,936.16 = 61,278.73 : x
  2. Step 2: Convert to fraction form
    104,305.93/143,936.16 = 61,278.73/x
  3. Step 3: Cross multiply
    104,305.93x = 143,936.16 × 61,278.73
  4. Step 4: Simplify right side
    104,305.93x = 8,820,224,496.24
  5. Step 5: Solve for x
    x = 8,820,224,496.24/104,305.93
  6. Step 6: Final answer
    x = 84,561.11

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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.