Home / 81,427.23-122,695.54-66,960.23

Finding the Fourth Proportional to 81,427.23, 122,695.54 and 66,960.23

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Solution

The fourth proportional to 81,427.23, 122,695.54 and 66,960.23 is: 100,896.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,427.23 : 122,695.54 = 66,960.23 : x
  2. Step 2: Convert to fraction form
    81,427.23/122,695.54 = 66,960.23/x
  3. Step 3: Cross multiply
    81,427.23x = 122,695.54 × 66,960.23
  4. Step 4: Simplify right side
    81,427.23x = 8,215,720,797.50
  5. Step 5: Solve for x
    x = 8,215,720,797.50/81,427.23
  6. Step 6: Final answer
    x = 100,896.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.