Home / 141,999.38-195,958.05-78,339.86

Finding the Fourth Proportional to 141,999.38, 195,958.05 and 78,339.86

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Solution

The fourth proportional to 141,999.38, 195,958.05 and 78,339.86 is: 108,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,999.38 : 195,958.05 = 78,339.86 : x
  2. Step 2: Convert to fraction form
    141,999.38/195,958.05 = 78,339.86/x
  3. Step 3: Cross multiply
    141,999.38x = 195,958.05 × 78,339.86
  4. Step 4: Simplify right side
    141,999.38x = 15,351,326,202.87
  5. Step 5: Solve for x
    x = 15,351,326,202.87/141,999.38
  6. Step 6: Final answer
    x = 108,108.40

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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.