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Finding the Fourth Proportional to 141,355.64, 195,081.92 and 80,945.30

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Solution

The fourth proportional to 141,355.64, 195,081.92 and 80,945.30 is: 111,710.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,355.64 : 195,081.92 = 80,945.30 : x
  2. Step 2: Convert to fraction form
    141,355.64/195,081.92 = 80,945.30/x
  3. Step 3: Cross multiply
    141,355.64x = 195,081.92 × 80,945.30
  4. Step 4: Simplify right side
    141,355.64x = 15,790,964,538.98
  5. Step 5: Solve for x
    x = 15,790,964,538.98/141,355.64
  6. Step 6: Final answer
    x = 111,710.89

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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.