Finding the Fourth Proportional to 102,163,893.12, 140,989,158.72 and 55,757,125.44
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Solution
The fourth proportional to 102,163,893.12, 140,989,158.72 and 55,757,125.44 is: 76,946,462.87
Step by Step Solution
- Step 1: Write the proportion equation
102,163,893.12 : 140,989,158.72 = 55,757,125.44 : x - Step 2: Convert to fraction form
102,163,893.12/140,989,158.72 = 55,757,125.44/x - Step 3: Cross multiply
102,163,893.12x = 140,989,158.72 × 55,757,125.44 - Step 4: Simplify right side
102,163,893.12x = 7,861,150,208,431,109 - Step 5: Solve for x
x = 7,861,150,208,431,109/102,163,893.12 - Step 6: Final answer
x = 76,946,462.87
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.