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Finding the Fourth Proportional to 141,279.71, 194,879.52 and 83,880.09

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Solution

The fourth proportional to 141,279.71, 194,879.52 and 83,880.09 is: 115,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,279.71 : 194,879.52 = 83,880.09 : x
  2. Step 2: Convert to fraction form
    141,279.71/194,879.52 = 83,880.09/x
  3. Step 3: Cross multiply
    141,279.71x = 194,879.52 × 83,880.09
  4. Step 4: Simplify right side
    141,279.71x = 16,346,511,676.76
  5. Step 5: Solve for x
    x = 16,346,511,676.76/141,279.71
  6. Step 6: Final answer
    x = 115,703.18

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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.