Home / 214,622,006.80-321,933,010.20-78,262,070.80

Finding the Fourth Proportional to 214,622,006.80, 321,933,010.20 and 78,262,070.80

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Solution

The fourth proportional to 214,622,006.80, 321,933,010.20 and 78,262,070.80 is: 117,393,106.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,622,006.80 : 321,933,010.20 = 78,262,070.80 : x
  2. Step 2: Convert to fraction form
    214,622,006.80/321,933,010.20 = 78,262,070.80/x
  3. Step 3: Cross multiply
    214,622,006.80x = 321,933,010.20 × 78,262,070.80
  4. Step 4: Simplify right side
    214,622,006.80x = 25,195,144,037,129,520
  5. Step 5: Solve for x
    x = 25,195,144,037,129,520/214,622,006.80
  6. Step 6: Final answer
    x = 117,393,106.20

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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.