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Finding the Fourth Proportional to 123,080.20, 184,620.30 and 81,016.90

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Solution

The fourth proportional to 123,080.20, 184,620.30 and 81,016.90 is: 121,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,080.20 : 184,620.30 = 81,016.90 : x
  2. Step 2: Convert to fraction form
    123,080.20/184,620.30 = 81,016.90/x
  3. Step 3: Cross multiply
    123,080.20x = 184,620.30 × 81,016.90
  4. Step 4: Simplify right side
    123,080.20x = 14,957,364,383.07
  5. Step 5: Solve for x
    x = 14,957,364,383.07/123,080.20
  6. Step 6: Final answer
    x = 121,525.35

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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.