Home / 139,629.88-192,693.18-75,971.80

Finding the Fourth Proportional to 139,629.88, 192,693.18 and 75,971.80

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Solution

The fourth proportional to 139,629.88, 192,693.18 and 75,971.80 is: 104,843.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,629.88 : 192,693.18 = 75,971.80 : x
  2. Step 2: Convert to fraction form
    139,629.88/192,693.18 = 75,971.80/x
  3. Step 3: Cross multiply
    139,629.88x = 192,693.18 × 75,971.80
  4. Step 4: Simplify right side
    139,629.88x = 14,639,247,732.32
  5. Step 5: Solve for x
    x = 14,639,247,732.32/139,629.88
  6. Step 6: Final answer
    x = 104,843.23

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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.