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Finding the Fourth Proportional to 139,180.96, 208,806 and 40,684.96

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Solution

The fourth proportional to 139,180.96, 208,806 and 40,684.96 is: 61,037.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,180.96 : 208,806 = 40,684.96 : x
  2. Step 2: Convert to fraction form
    139,180.96/208,806 = 40,684.96/x
  3. Step 3: Cross multiply
    139,180.96x = 208,806 × 40,684.96
  4. Step 4: Simplify right side
    139,180.96x = 8,495,263,757.76
  5. Step 5: Solve for x
    x = 8,495,263,757.76/139,180.96
  6. Step 6: Final answer
    x = 61,037.54

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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.