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Finding the Fourth Proportional to 139,657.53, 192,727.44 and 75,993.96

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Solution

The fourth proportional to 139,657.53, 192,727.44 and 75,993.96 is: 104,871.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,657.53 : 192,727.44 = 75,993.96 : x
  2. Step 2: Convert to fraction form
    139,657.53/192,727.44 = 75,993.96/x
  3. Step 3: Cross multiply
    139,657.53x = 192,727.44 × 75,993.96
  4. Step 4: Simplify right side
    139,657.53x = 14,646,121,366.26
  5. Step 5: Solve for x
    x = 14,646,121,366.26/139,657.53
  6. Step 6: Final answer
    x = 104,871.69

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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.