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Finding the Fourth Proportional to 141,981.60, 212,745.60 and 75,334.80

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Solution

The fourth proportional to 141,981.60, 212,745.60 and 75,334.80 is: 112,881.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,981.60 : 212,745.60 = 75,334.80 : x
  2. Step 2: Convert to fraction form
    141,981.60/212,745.60 = 75,334.80/x
  3. Step 3: Cross multiply
    141,981.60x = 212,745.60 × 75,334.80
  4. Step 4: Simplify right side
    141,981.60x = 16,027,147,226.88
  5. Step 5: Solve for x
    x = 16,027,147,226.88/141,981.60
  6. Step 6: Final answer
    x = 112,881.86

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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.