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Finding the Fourth Proportional to 143,131.60, 214,697.40 and 37,961.20

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Solution

The fourth proportional to 143,131.60, 214,697.40 and 37,961.20 is: 56,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,131.60 : 214,697.40 = 37,961.20 : x
  2. Step 2: Convert to fraction form
    143,131.60/214,697.40 = 37,961.20/x
  3. Step 3: Cross multiply
    143,131.60x = 214,697.40 × 37,961.20
  4. Step 4: Simplify right side
    143,131.60x = 8,150,170,940.88
  5. Step 5: Solve for x
    x = 8,150,170,940.88/143,131.60
  6. Step 6: Final answer
    x = 56,941.80

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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.