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Finding the Fourth Proportional to 139,430.49, 209,146.41 and 34,249.47

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Solution

The fourth proportional to 139,430.49, 209,146.41 and 34,249.47 is: 51,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,430.49 : 209,146.41 = 34,249.47 : x
  2. Step 2: Convert to fraction form
    139,430.49/209,146.41 = 34,249.47/x
  3. Step 3: Cross multiply
    139,430.49x = 209,146.41 × 34,249.47
  4. Step 4: Simplify right side
    139,430.49x = 7,163,153,694.90
  5. Step 5: Solve for x
    x = 7,163,153,694.90/139,430.49
  6. Step 6: Final answer
    x = 51,374.37

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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.