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Finding the Fourth Proportional to 139,213.70, 208,820.55 and 50,467.10

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Solution

The fourth proportional to 139,213.70, 208,820.55 and 50,467.10 is: 75,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,213.70 : 208,820.55 = 50,467.10 : x
  2. Step 2: Convert to fraction form
    139,213.70/208,820.55 = 50,467.10/x
  3. Step 3: Cross multiply
    139,213.70x = 208,820.55 × 50,467.10
  4. Step 4: Simplify right side
    139,213.70x = 10,538,567,578.91
  5. Step 5: Solve for x
    x = 10,538,567,578.91/139,213.70
  6. Step 6: Final answer
    x = 75,700.65

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1.5x scale

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.