Home / 139,384,941.20-209,077,411.80-84,965,382.80

Finding the Fourth Proportional to 139,384,941.20, 209,077,411.80 and 84,965,382.80

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Solution

The fourth proportional to 139,384,941.20, 209,077,411.80 and 84,965,382.80 is: 127,448,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,384,941.20 : 209,077,411.80 = 84,965,382.80 : x
  2. Step 2: Convert to fraction form
    139,384,941.20/209,077,411.80 = 84,965,382.80/x
  3. Step 3: Cross multiply
    139,384,941.20x = 209,077,411.80 × 84,965,382.80
  4. Step 4: Simplify right side
    139,384,941.20x = 17,764,342,328,420,238
  5. Step 5: Solve for x
    x = 17,764,342,328,420,238/139,384,941.20
  6. Step 6: Final answer
    x = 127,448,074.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.