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Finding the Fourth Proportional to 139,474.89, 192,467.48 and 75,812.22

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Solution

The fourth proportional to 139,474.89, 192,467.48 and 75,812.22 is: 104,616.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,474.89 : 192,467.48 = 75,812.22 : x
  2. Step 2: Convert to fraction form
    139,474.89/192,467.48 = 75,812.22/x
  3. Step 3: Cross multiply
    139,474.89x = 192,467.48 × 75,812.22
  4. Step 4: Simplify right side
    139,474.89x = 14,591,386,557.54
  5. Step 5: Solve for x
    x = 14,591,386,557.54/139,474.89
  6. Step 6: Final answer
    x = 104,616.58

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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.