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Finding the Fourth Proportional to 139,113.44, 208,666.44 and 39,280.52

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Solution

The fourth proportional to 139,113.44, 208,666.44 and 39,280.52 is: 58,919.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,113.44 : 208,666.44 = 39,280.52 : x
  2. Step 2: Convert to fraction form
    139,113.44/208,666.44 = 39,280.52/x
  3. Step 3: Cross multiply
    139,113.44x = 208,666.44 × 39,280.52
  4. Step 4: Simplify right side
    139,113.44x = 8,196,526,269.75
  5. Step 5: Solve for x
    x = 8,196,526,269.75/139,113.44
  6. Step 6: Final answer
    x = 58,919.73

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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.