Home / 139,428,447.36-192,397,777.92-80,679,393.60

Finding the Fourth Proportional to 139,428,447.36, 192,397,777.92 and 80,679,393.60

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Solution

The fourth proportional to 139,428,447.36, 192,397,777.92 and 80,679,393.60 is: 111,329,763.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,428,447.36 : 192,397,777.92 = 80,679,393.60 : x
  2. Step 2: Convert to fraction form
    139,428,447.36/192,397,777.92 = 80,679,393.60/x
  3. Step 3: Cross multiply
    139,428,447.36x = 192,397,777.92 × 80,679,393.60
  4. Step 4: Simplify right side
    139,428,447.36x = 15,522,536,052,573,068
  5. Step 5: Solve for x
    x = 15,522,536,052,573,068/139,428,447.36
  6. Step 6: Final answer
    x = 111,329,763.38

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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.