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Finding the Fourth Proportional to 141,996.40, 213,167.40 and 71,839.60

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Solution

The fourth proportional to 141,996.40, 213,167.40 and 71,839.60 is: 107,846.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,996.40 : 213,167.40 = 71,839.60 : x
  2. Step 2: Convert to fraction form
    141,996.40/213,167.40 = 71,839.60/x
  3. Step 3: Cross multiply
    141,996.40x = 213,167.40 × 71,839.60
  4. Step 4: Simplify right side
    141,996.40x = 15,313,860,749.04
  5. Step 5: Solve for x
    x = 15,313,860,749.04/141,996.40
  6. Step 6: Final answer
    x = 107,846.82

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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.