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Finding the Fourth Proportional to 141,318,905.40, 211,978,358.10 and 131,115,238.20

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Solution

The fourth proportional to 141,318,905.40, 211,978,358.10 and 131,115,238.20 is: 196,672,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,318,905.40 : 211,978,358.10 = 131,115,238.20 : x
  2. Step 2: Convert to fraction form
    141,318,905.40/211,978,358.10 = 131,115,238.20/x
  3. Step 3: Cross multiply
    141,318,905.40x = 211,978,358.10 × 131,115,238.20
  4. Step 4: Simplify right side
    141,318,905.40x = 27,793,592,915,526,400
  5. Step 5: Solve for x
    x = 27,793,592,915,526,400/141,318,905.40
  6. Step 6: Final answer
    x = 196,672,857.30

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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.