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Finding the Fourth Proportional to 192,362.72, 288,544.20 and 80,040.80

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Solution

The fourth proportional to 192,362.72, 288,544.20 and 80,040.80 is: 120,061.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,362.72 : 288,544.20 = 80,040.80 : x
  2. Step 2: Convert to fraction form
    192,362.72/288,544.20 = 80,040.80/x
  3. Step 3: Cross multiply
    192,362.72x = 288,544.20 × 80,040.80
  4. Step 4: Simplify right side
    192,362.72x = 23,095,308,603.36
  5. Step 5: Solve for x
    x = 23,095,308,603.36/192,362.72
  6. Step 6: Final answer
    x = 120,061.25

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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.