Home / 203,823.23-305,636.07-85,462.79

Finding the Fourth Proportional to 203,823.23, 305,636.07 and 85,462.79

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Solution

The fourth proportional to 203,823.23, 305,636.07 and 85,462.79 is: 128,152.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,823.23 : 305,636.07 = 85,462.79 : x
  2. Step 2: Convert to fraction form
    203,823.23/305,636.07 = 85,462.79/x
  3. Step 3: Cross multiply
    203,823.23x = 305,636.07 × 85,462.79
  4. Step 4: Simplify right side
    203,823.23x = 26,120,509,738.66
  5. Step 5: Solve for x
    x = 26,120,509,738.66/203,823.23
  6. Step 6: Final answer
    x = 128,152.76

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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.