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Finding the Fourth Proportional to 139,996.44, 209,935.43 and 76,798.52

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Solution

The fourth proportional to 139,996.44, 209,935.43 and 76,798.52 is: 115,165.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,996.44 : 209,935.43 = 76,798.52 : x
  2. Step 2: Convert to fraction form
    139,996.44/209,935.43 = 76,798.52/x
  3. Step 3: Cross multiply
    139,996.44x = 209,935.43 × 76,798.52
  4. Step 4: Simplify right side
    139,996.44x = 16,122,730,319.56
  5. Step 5: Solve for x
    x = 16,122,730,319.56/139,996.44
  6. Step 6: Final answer
    x = 115,165.29

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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.