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Finding the Fourth Proportional to 139,618.53, 192,674.03 and 75,956.31

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Solution

The fourth proportional to 139,618.53, 192,674.03 and 75,956.31 is: 104,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,618.53 : 192,674.03 = 75,956.31 : x
  2. Step 2: Convert to fraction form
    139,618.53/192,674.03 = 75,956.31/x
  3. Step 3: Cross multiply
    139,618.53x = 192,674.03 × 75,956.31
  4. Step 4: Simplify right side
    139,618.53x = 14,634,807,971.85
  5. Step 5: Solve for x
    x = 14,634,807,971.85/139,618.53
  6. Step 6: Final answer
    x = 104,819.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.