Home / 139,235.20-192,142.16-75,571.64

Finding the Fourth Proportional to 139,235.20, 192,142.16 and 75,571.64

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Solution

The fourth proportional to 139,235.20, 192,142.16 and 75,571.64 is: 104,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235.20 : 192,142.16 = 75,571.64 : x
  2. Step 2: Convert to fraction form
    139,235.20/192,142.16 = 75,571.64/x
  3. Step 3: Cross multiply
    139,235.20x = 192,142.16 × 75,571.64
  4. Step 4: Simplify right side
    139,235.20x = 14,520,498,144.34
  5. Step 5: Solve for x
    x = 14,520,498,144.34/139,235.20
  6. Step 6: Final answer
    x = 104,287.55

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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.