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Finding the Fourth Proportional to 123,825.82, 170,880.33 and 67,237.21

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Solution

The fourth proportional to 123,825.82, 170,880.33 and 67,237.21 is: 92,787.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,825.82 : 170,880.33 = 67,237.21 : x
  2. Step 2: Convert to fraction form
    123,825.82/170,880.33 = 67,237.21/x
  3. Step 3: Cross multiply
    123,825.82x = 170,880.33 × 67,237.21
  4. Step 4: Simplify right side
    123,825.82x = 11,489,516,633.08
  5. Step 5: Solve for x
    x = 11,489,516,633.08/123,825.82
  6. Step 6: Final answer
    x = 92,787.73

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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.