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Finding the Fourth Proportional to 203,391.96, 305,131.98 and 83,449.18

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Solution

The fourth proportional to 203,391.96, 305,131.98 and 83,449.18 is: 125,191.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,391.96 : 305,131.98 = 83,449.18 : x
  2. Step 2: Convert to fraction form
    203,391.96/305,131.98 = 83,449.18/x
  3. Step 3: Cross multiply
    203,391.96x = 305,131.98 × 83,449.18
  4. Step 4: Simplify right side
    203,391.96x = 25,463,013,522.78
  5. Step 5: Solve for x
    x = 25,463,013,522.78/203,391.96
  6. Step 6: Final answer
    x = 125,191.84

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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.