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Finding the Fourth Proportional to 139,107.26, 208,590.73 and 99,103.39

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Solution

The fourth proportional to 139,107.26, 208,590.73 and 99,103.39 is: 148,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,107.26 : 208,590.73 = 99,103.39 : x
  2. Step 2: Convert to fraction form
    139,107.26/208,590.73 = 99,103.39/x
  3. Step 3: Cross multiply
    139,107.26x = 208,590.73 × 99,103.39
  4. Step 4: Simplify right side
    139,107.26x = 20,672,048,465.57
  5. Step 5: Solve for x
    x = 20,672,048,465.57/139,107.26
  6. Step 6: Final answer
    x = 148,605.10

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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.