Home / 203,779.17-305,570.43-85,418.73

Finding the Fourth Proportional to 203,779.17, 305,570.43 and 85,418.73

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Solution

The fourth proportional to 203,779.17, 305,570.43 and 85,418.73 is: 128,086.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,779.17 : 305,570.43 = 85,418.73 : x
  2. Step 2: Convert to fraction form
    203,779.17/305,570.43 = 85,418.73/x
  3. Step 3: Cross multiply
    203,779.17x = 305,570.43 × 85,418.73
  4. Step 4: Simplify right side
    203,779.17x = 26,101,438,056.15
  5. Step 5: Solve for x
    x = 26,101,438,056.15/203,779.17
  6. Step 6: Final answer
    x = 128,086.88

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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.