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Finding the Fourth Proportional to 139,190.70, 192,083.73 and 75,528.48

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Solution

The fourth proportional to 139,190.70, 192,083.73 and 75,528.48 is: 104,229.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,190.70 : 192,083.73 = 75,528.48 : x
  2. Step 2: Convert to fraction form
    139,190.70/192,083.73 = 75,528.48/x
  3. Step 3: Cross multiply
    139,190.70x = 192,083.73 × 75,528.48
  4. Step 4: Simplify right side
    139,190.70x = 14,507,792,159.63
  5. Step 5: Solve for x
    x = 14,507,792,159.63/139,190.70
  6. Step 6: Final answer
    x = 104,229.61

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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.