Finding the Fourth Proportional to 102,163,917.12, 140,989,191.84 and 55,757,149.44
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Solution
The fourth proportional to 102,163,917.12, 140,989,191.84 and 55,757,149.44 is: 76,946,495.99
Step by Step Solution
- Step 1: Write the proportion equation
102,163,917.12 : 140,989,191.84 = 55,757,149.44 : x - Step 2: Convert to fraction form
102,163,917.12/140,989,191.84 = 55,757,149.44/x - Step 3: Cross multiply
102,163,917.12x = 140,989,191.84 × 55,757,149.44 - Step 4: Simplify right side
102,163,917.12x = 7,861,155,438,847,708 - Step 5: Solve for x
x = 7,861,155,438,847,708/102,163,917.12 - Step 6: Final answer
x = 76,946,495.99
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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.