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Finding the Fourth Proportional to 104,198.40, 143,758.80 and 66,494.52

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Solution

The fourth proportional to 104,198.40, 143,758.80 and 66,494.52 is: 91,740.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,198.40 : 143,758.80 = 66,494.52 : x
  2. Step 2: Convert to fraction form
    104,198.40/143,758.80 = 66,494.52/x
  3. Step 3: Cross multiply
    104,198.40x = 143,758.80 × 66,494.52
  4. Step 4: Simplify right side
    104,198.40x = 9,559,172,401.78
  5. Step 5: Solve for x
    x = 9,559,172,401.78/104,198.40
  6. Step 6: Final answer
    x = 91,740.11

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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.