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Finding the Fourth Proportional to 141,863.60, 212,795.40 and 71,879.60

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Solution

The fourth proportional to 141,863.60, 212,795.40 and 71,879.60 is: 107,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,863.60 : 212,795.40 = 71,879.60 : x
  2. Step 2: Convert to fraction form
    141,863.60/212,795.40 = 71,879.60/x
  3. Step 3: Cross multiply
    141,863.60x = 212,795.40 × 71,879.60
  4. Step 4: Simplify right side
    141,863.60x = 15,295,648,233.84
  5. Step 5: Solve for x
    x = 15,295,648,233.84/141,863.60
  6. Step 6: Final answer
    x = 107,819.40

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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.