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Finding the Fourth Proportional to 139,349.52, 209,095.77 and 68,270.82

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Solution

The fourth proportional to 139,349.52, 209,095.77 and 68,270.82 is: 102,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,349.52 : 209,095.77 = 68,270.82 : x
  2. Step 2: Convert to fraction form
    139,349.52/209,095.77 = 68,270.82/x
  3. Step 3: Cross multiply
    139,349.52x = 209,095.77 × 68,270.82
  4. Step 4: Simplify right side
    139,349.52x = 14,275,139,676.43
  5. Step 5: Solve for x
    x = 14,275,139,676.43/139,349.52
  6. Step 6: Final answer
    x = 102,441.25

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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.