Home / 139,636.20-192,698.80-75,974.46

Finding the Fourth Proportional to 139,636.20, 192,698.80 and 75,974.46

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Solution

The fourth proportional to 139,636.20, 192,698.80 and 75,974.46 is: 104,845.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,636.20 : 192,698.80 = 75,974.46 : x
  2. Step 2: Convert to fraction form
    139,636.20/192,698.80 = 75,974.46/x
  3. Step 3: Cross multiply
    139,636.20x = 192,698.80 × 75,974.46
  4. Step 4: Simplify right side
    139,636.20x = 14,640,187,272.65
  5. Step 5: Solve for x
    x = 14,640,187,272.65/139,636.20
  6. Step 6: Final answer
    x = 104,845.21

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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.