Home / 139,743,601-192,846,934.02-81,041,070.76

Finding the Fourth Proportional to 139,743,601, 192,846,934.02 and 81,041,070.76

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Solution

The fourth proportional to 139,743,601, 192,846,934.02 and 81,041,070.76 is: 111,837,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743,601 : 192,846,934.02 = 81,041,070.76 : x
  2. Step 2: Convert to fraction form
    139,743,601/192,846,934.02 = 81,041,070.76/x
  3. Step 3: Cross multiply
    139,743,601x = 192,846,934.02 × 81,041,070.76
  4. Step 4: Simplify right side
    139,743,601x = 15,628,522,025,763,874
  5. Step 5: Solve for x
    x = 15,628,522,025,763,874/139,743,601
  6. Step 6: Final answer
    x = 111,837,121.08

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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.