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Finding the Fourth Proportional to 141,212.80, 211,794.90 and 52,420.60

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Solution

The fourth proportional to 141,212.80, 211,794.90 and 52,420.60 is: 78,621.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,212.80 : 211,794.90 = 52,420.60 : x
  2. Step 2: Convert to fraction form
    141,212.80/211,794.90 = 52,420.60/x
  3. Step 3: Cross multiply
    141,212.80x = 211,794.90 × 52,420.60
  4. Step 4: Simplify right side
    141,212.80x = 11,102,415,734.94
  5. Step 5: Solve for x
    x = 11,102,415,734.94/141,212.80
  6. Step 6: Final answer
    x = 78,621.88

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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.