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Finding the Fourth Proportional to 131,446.40, 196,910.40 and 122,115.20

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Solution

The fourth proportional to 131,446.40, 196,910.40 and 122,115.20 is: 182,932.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,446.40 : 196,910.40 = 122,115.20 : x
  2. Step 2: Convert to fraction form
    131,446.40/196,910.40 = 122,115.20/x
  3. Step 3: Cross multiply
    131,446.40x = 196,910.40 × 122,115.20
  4. Step 4: Simplify right side
    131,446.40x = 24,045,752,878.08
  5. Step 5: Solve for x
    x = 24,045,752,878.08/131,446.40
  6. Step 6: Final answer
    x = 182,932.00

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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.