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Finding the Fourth Proportional to 123,782.92, 170,820.26 and 67,194.30

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Solution

The fourth proportional to 123,782.92, 170,820.26 and 67,194.30 is: 92,728.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,782.92 : 170,820.26 = 67,194.30 : x
  2. Step 2: Convert to fraction form
    123,782.92/170,820.26 = 67,194.30/x
  3. Step 3: Cross multiply
    123,782.92x = 170,820.26 × 67,194.30
  4. Step 4: Simplify right side
    123,782.92x = 11,478,147,796.52
  5. Step 5: Solve for x
    x = 11,478,147,796.52/123,782.92
  6. Step 6: Final answer
    x = 92,728.04

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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.