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Finding the Fourth Proportional to 109,940.30, 164,910.45 and 82,292.30

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Solution

The fourth proportional to 109,940.30, 164,910.45 and 82,292.30 is: 123,438.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,940.30 : 164,910.45 = 82,292.30 : x
  2. Step 2: Convert to fraction form
    109,940.30/164,910.45 = 82,292.30/x
  3. Step 3: Cross multiply
    109,940.30x = 164,910.45 × 82,292.30
  4. Step 4: Simplify right side
    109,940.30x = 13,570,860,224.54
  5. Step 5: Solve for x
    x = 13,570,860,224.54/109,940.30
  6. Step 6: Final answer
    x = 123,438.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.