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Finding the Fourth Proportional to 123,265.70, 170,107.49 and 75,519.14

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Solution

The fourth proportional to 123,265.70, 170,107.49 and 75,519.14 is: 104,216.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,265.70 : 170,107.49 = 75,519.14 : x
  2. Step 2: Convert to fraction form
    123,265.70/170,107.49 = 75,519.14/x
  3. Step 3: Cross multiply
    123,265.70x = 170,107.49 × 75,519.14
  4. Step 4: Simplify right side
    123,265.70x = 12,846,370,690.62
  5. Step 5: Solve for x
    x = 12,846,370,690.62/123,265.70
  6. Step 6: Final answer
    x = 104,216.91

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1.5x scale

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.