Finding the Fourth Proportional to 78,734,109.20, 118,101,163.80 and 67,774,614.80
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Solution
The fourth proportional to 78,734,109.20, 118,101,163.80 and 67,774,614.80 is: 101,661,922.20
Step by Step Solution
- Step 1: Write the proportion equation
78,734,109.20 : 118,101,163.80 = 67,774,614.80 : x - Step 2: Convert to fraction form
78,734,109.20/118,101,163.80 = 67,774,614.80/x - Step 3: Cross multiply
78,734,109.20x = 118,101,163.80 × 67,774,614.80 - Step 4: Simplify right side
78,734,109.20x = 8,004,260,883,976,704 - Step 5: Solve for x
x = 8,004,260,883,976,704/78,734,109.20 - Step 6: Final answer
x = 101,661,922.20
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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.