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Finding the Fourth Proportional to 139,469.19, 209,201.96 and 34,289.07

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Solution

The fourth proportional to 139,469.19, 209,201.96 and 34,289.07 is: 51,433.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,469.19 : 209,201.96 = 34,289.07 : x
  2. Step 2: Convert to fraction form
    139,469.19/209,201.96 = 34,289.07/x
  3. Step 3: Cross multiply
    139,469.19x = 209,201.96 × 34,289.07
  4. Step 4: Simplify right side
    139,469.19x = 7,173,340,479.13
  5. Step 5: Solve for x
    x = 7,173,340,479.13/139,469.19
  6. Step 6: Final answer
    x = 51,433.16

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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.