Home / 139,847,825.20-192,990,807.48-77,972,015.92

Finding the Fourth Proportional to 139,847,825.20, 192,990,807.48 and 77,972,015.92

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Solution

The fourth proportional to 139,847,825.20, 192,990,807.48 and 77,972,015.92 is: 107,601,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,847,825.20 : 192,990,807.48 = 77,972,015.92 : x
  2. Step 2: Convert to fraction form
    139,847,825.20/192,990,807.48 = 77,972,015.92/x
  3. Step 3: Cross multiply
    139,847,825.20x = 192,990,807.48 × 77,972,015.92
  4. Step 4: Simplify right side
    139,847,825.20x = 15,047,882,313,244,214
  5. Step 5: Solve for x
    x = 15,047,882,313,244,214/139,847,825.20
  6. Step 6: Final answer
    x = 107,601,832.86

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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.