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Finding the Fourth Proportional to 139,906.02, 209,920.99 and 73,330.32

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Solution

The fourth proportional to 139,906.02, 209,920.99 and 73,330.32 is: 110,027.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,906.02 : 209,920.99 = 73,330.32 : x
  2. Step 2: Convert to fraction form
    139,906.02/209,920.99 = 73,330.32/x
  3. Step 3: Cross multiply
    139,906.02x = 209,920.99 × 73,330.32
  4. Step 4: Simplify right side
    139,906.02x = 15,393,572,138.49
  5. Step 5: Solve for x
    x = 15,393,572,138.49/139,906.02
  6. Step 6: Final answer
    x = 110,027.95

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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.