Home / 80,685.45-120,511.94-73,075.37

Finding the Fourth Proportional to 80,685.45, 120,511.94 and 73,075.37

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Solution

The fourth proportional to 80,685.45, 120,511.94 and 73,075.37 is: 109,145.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,685.45 : 120,511.94 = 73,075.37 : x
  2. Step 2: Convert to fraction form
    80,685.45/120,511.94 = 73,075.37/x
  3. Step 3: Cross multiply
    80,685.45x = 120,511.94 × 73,075.37
  4. Step 4: Simplify right side
    80,685.45x = 8,806,453,636.98
  5. Step 5: Solve for x
    x = 8,806,453,636.98/80,685.45
  6. Step 6: Final answer
    x = 109,145.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.