Home / 123,825.45-170,879.81-67,236.84

Finding the Fourth Proportional to 123,825.45, 170,879.81 and 67,236.84

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Solution

The fourth proportional to 123,825.45, 170,879.81 and 67,236.84 is: 92,787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,825.45 : 170,879.81 = 67,236.84 : x
  2. Step 2: Convert to fraction form
    123,825.45/170,879.81 = 67,236.84/x
  3. Step 3: Cross multiply
    123,825.45x = 170,879.81 × 67,236.84
  4. Step 4: Simplify right side
    123,825.45x = 11,489,417,757.89
  5. Step 5: Solve for x
    x = 11,489,417,757.89/123,825.45
  6. Step 6: Final answer
    x = 92,787.21

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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.