Home / 139,847,824.20-192,990,806.10-77,972,014.92

Finding the Fourth Proportional to 139,847,824.20, 192,990,806.10 and 77,972,014.92

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Solution

The fourth proportional to 139,847,824.20, 192,990,806.10 and 77,972,014.92 is: 107,601,831.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,847,824.20 : 192,990,806.10 = 77,972,014.92 : x
  2. Step 2: Convert to fraction form
    139,847,824.20/192,990,806.10 = 77,972,014.92/x
  3. Step 3: Cross multiply
    139,847,824.20x = 192,990,806.10 × 77,972,014.92
  4. Step 4: Simplify right side
    139,847,824.20x = 15,047,882,012,652,026
  5. Step 5: Solve for x
    x = 15,047,882,012,652,026/139,847,824.20
  6. Step 6: Final answer
    x = 107,601,831.48

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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.