Home / 139,825.52-192,959.30-76,163.60

Finding the Fourth Proportional to 139,825.52, 192,959.30 and 76,163.60

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Solution

The fourth proportional to 139,825.52, 192,959.30 and 76,163.60 is: 105,105.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,825.52 : 192,959.30 = 76,163.60 : x
  2. Step 2: Convert to fraction form
    139,825.52/192,959.30 = 76,163.60/x
  3. Step 3: Cross multiply
    139,825.52x = 192,959.30 × 76,163.60
  4. Step 4: Simplify right side
    139,825.52x = 14,696,474,941.48
  5. Step 5: Solve for x
    x = 14,696,474,941.48/139,825.52
  6. Step 6: Final answer
    x = 105,105.81

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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.