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Finding the Fourth Proportional to 139,230.56, 208,845.84 and 34,048.28

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Solution

The fourth proportional to 139,230.56, 208,845.84 and 34,048.28 is: 51,072.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,230.56 : 208,845.84 = 34,048.28 : x
  2. Step 2: Convert to fraction form
    139,230.56/208,845.84 = 34,048.28/x
  3. Step 3: Cross multiply
    139,230.56x = 208,845.84 × 34,048.28
  4. Step 4: Simplify right side
    139,230.56x = 7,110,841,637.16
  5. Step 5: Solve for x
    x = 7,110,841,637.16/139,230.56
  6. Step 6: Final answer
    x = 51,072.42

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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.