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Finding the Fourth Proportional to 139,467.93, 192,465.99 and 75,805.56

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Solution

The fourth proportional to 139,467.93, 192,465.99 and 75,805.56 is: 104,611.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,467.93 : 192,465.99 = 75,805.56 : x
  2. Step 2: Convert to fraction form
    139,467.93/192,465.99 = 75,805.56/x
  3. Step 3: Cross multiply
    139,467.93x = 192,465.99 × 75,805.56
  4. Step 4: Simplify right side
    139,467.93x = 14,589,992,152.90
  5. Step 5: Solve for x
    x = 14,589,992,152.90/139,467.93
  6. Step 6: Final answer
    x = 104,611.81

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1.5x scale

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.