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Finding the Fourth Proportional to 139,969,969.20, 209,954,953.80 and 119,562,634.80

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Solution

The fourth proportional to 139,969,969.20, 209,954,953.80 and 119,562,634.80 is: 179,343,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,969.20 : 209,954,953.80 = 119,562,634.80 : x
  2. Step 2: Convert to fraction form
    139,969,969.20/209,954,953.80 = 119,562,634.80/x
  3. Step 3: Cross multiply
    139,969,969.20x = 209,954,953.80 × 119,562,634.80
  4. Step 4: Simplify right side
    139,969,969.20x = 25,102,767,465,640,272
  5. Step 5: Solve for x
    x = 25,102,767,465,640,272/139,969,969.20
  6. Step 6: Final answer
    x = 179,343,952.20

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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.