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Finding the Fourth Proportional to 139,346.17, 208,819.95 and 111,351.34

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Solution

The fourth proportional to 139,346.17, 208,819.95 and 111,351.34 is: 166,867.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,346.17 : 208,819.95 = 111,351.34 : x
  2. Step 2: Convert to fraction form
    139,346.17/208,819.95 = 111,351.34/x
  3. Step 3: Cross multiply
    139,346.17x = 208,819.95 × 111,351.34
  4. Step 4: Simplify right side
    139,346.17x = 23,252,381,251.23
  5. Step 5: Solve for x
    x = 23,252,381,251.23/139,346.17
  6. Step 6: Final answer
    x = 166,867.75

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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.