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Finding the Fourth Proportional to 141,843.60, 195,735.24 and 78,181.74

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Solution

The fourth proportional to 141,843.60, 195,735.24 and 78,181.74 is: 107,885.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,843.60 : 195,735.24 = 78,181.74 : x
  2. Step 2: Convert to fraction form
    141,843.60/195,735.24 = 78,181.74/x
  3. Step 3: Cross multiply
    141,843.60x = 195,735.24 × 78,181.74
  4. Step 4: Simplify right side
    141,843.60x = 15,302,921,642.52
  5. Step 5: Solve for x
    x = 15,302,921,642.52/141,843.60
  6. Step 6: Final answer
    x = 107,885.88

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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.