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Finding the Fourth Proportional to 141,850.60, 195,718.50 and 91,489

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Solution

The fourth proportional to 141,850.60, 195,718.50 and 91,489 is: 126,232.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,850.60 : 195,718.50 = 91,489 : x
  2. Step 2: Convert to fraction form
    141,850.60/195,718.50 = 91,489/x
  3. Step 3: Cross multiply
    141,850.60x = 195,718.50 × 91,489
  4. Step 4: Simplify right side
    141,850.60x = 17,906,089,846.50
  5. Step 5: Solve for x
    x = 17,906,089,846.50/141,850.60
  6. Step 6: Final answer
    x = 126,232.03

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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.