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Finding the Fourth Proportional to 104,075.82, 143,628.11 and 63,781.80

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Solution

The fourth proportional to 104,075.82, 143,628.11 and 63,781.80 is: 88,021.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,075.82 : 143,628.11 = 63,781.80 : x
  2. Step 2: Convert to fraction form
    104,075.82/143,628.11 = 63,781.80/x
  3. Step 3: Cross multiply
    104,075.82x = 143,628.11 × 63,781.80
  4. Step 4: Simplify right side
    104,075.82x = 9,160,858,768.07
  5. Step 5: Solve for x
    x = 9,160,858,768.07/104,075.82
  6. Step 6: Final answer
    x = 88,021.01

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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.