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Finding the Fourth Proportional to 145,213.44, 200,393.43 and 83,958.30

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Solution

The fourth proportional to 145,213.44, 200,393.43 and 83,958.30 is: 115,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,213.44 : 200,393.43 = 83,958.30 : x
  2. Step 2: Convert to fraction form
    145,213.44/200,393.43 = 83,958.30/x
  3. Step 3: Cross multiply
    145,213.44x = 200,393.43 × 83,958.30
  4. Step 4: Simplify right side
    145,213.44x = 16,824,691,713.97
  5. Step 5: Solve for x
    x = 16,824,691,713.97/145,213.44
  6. Step 6: Final answer
    x = 115,861.81

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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.