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Finding the Fourth Proportional to 139,451.63, 209,094.26 and 55,223.87

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Solution

The fourth proportional to 139,451.63, 209,094.26 and 55,223.87 is: 82,802.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,451.63 : 209,094.26 = 55,223.87 : x
  2. Step 2: Convert to fraction form
    139,451.63/209,094.26 = 55,223.87/x
  3. Step 3: Cross multiply
    139,451.63x = 209,094.26 × 55,223.87
  4. Step 4: Simplify right side
    139,451.63x = 11,546,992,910.40
  5. Step 5: Solve for x
    x = 11,546,992,910.40/139,451.63
  6. Step 6: Final answer
    x = 82,802.86

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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.