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Finding the Fourth Proportional to 134,164.56, 185,139.56 and 80,422.68

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Solution

The fourth proportional to 134,164.56, 185,139.56 and 80,422.68 is: 110,978.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,164.56 : 185,139.56 = 80,422.68 : x
  2. Step 2: Convert to fraction form
    134,164.56/185,139.56 = 80,422.68/x
  3. Step 3: Cross multiply
    134,164.56x = 185,139.56 × 80,422.68
  4. Step 4: Simplify right side
    134,164.56x = 14,889,419,589.22
  5. Step 5: Solve for x
    x = 14,889,419,589.22/134,164.56
  6. Step 6: Final answer
    x = 110,978.78

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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.