Home / 139,063.20-208,633.60-45,634.56

Finding the Fourth Proportional to 139,063.20, 208,633.60 and 45,634.56

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Solution

The fourth proportional to 139,063.20, 208,633.60 and 45,634.56 is: 68,464.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063.20 : 208,633.60 = 45,634.56 : x
  2. Step 2: Convert to fraction form
    139,063.20/208,633.60 = 45,634.56/x
  3. Step 3: Cross multiply
    139,063.20x = 208,633.60 × 45,634.56
  4. Step 4: Simplify right side
    139,063.20x = 9,520,902,537.22
  5. Step 5: Solve for x
    x = 9,520,902,537.22/139,063.20
  6. Step 6: Final answer
    x = 68,464.57

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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.