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Finding the Fourth Proportional to 168,182.56, 252,431.28 and 85,134.88

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Solution

The fourth proportional to 168,182.56, 252,431.28 and 85,134.88 is: 127,782.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,182.56 : 252,431.28 = 85,134.88 : x
  2. Step 2: Convert to fraction form
    168,182.56/252,431.28 = 85,134.88/x
  3. Step 3: Cross multiply
    168,182.56x = 252,431.28 × 85,134.88
  4. Step 4: Simplify right side
    168,182.56x = 21,490,706,731.05
  5. Step 5: Solve for x
    x = 21,490,706,731.05/168,182.56
  6. Step 6: Final answer
    x = 127,782.02

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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.