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Finding the Fourth Proportional to 104,205.80, 143,797.20 and 66,476

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Solution

The fourth proportional to 104,205.80, 143,797.20 and 66,476 is: 91,732.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,205.80 : 143,797.20 = 66,476 : x
  2. Step 2: Convert to fraction form
    104,205.80/143,797.20 = 66,476/x
  3. Step 3: Cross multiply
    104,205.80x = 143,797.20 × 66,476
  4. Step 4: Simplify right side
    104,205.80x = 9,559,062,667.20
  5. Step 5: Solve for x
    x = 9,559,062,667.20/104,205.80
  6. Step 6: Final answer
    x = 91,732.54

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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.