Finding the Fourth Proportional to 128,317,406.24, 192,399,244.21 and 40,841,138.11
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Solution
The fourth proportional to 128,317,406.24, 192,399,244.21 and 40,841,138.11 is: 61,237,242.36
Step by Step Solution
- Step 1: Write the proportion equation
128,317,406.24 : 192,399,244.21 = 40,841,138.11 : x - Step 2: Convert to fraction form
128,317,406.24/192,399,244.21 = 40,841,138.11/x - Step 3: Cross multiply
128,317,406.24x = 192,399,244.21 × 40,841,138.11 - Step 4: Simplify right side
128,317,406.24x = 7,857,804,105,040,228 - Step 5: Solve for x
x = 7,857,804,105,040,228/128,317,406.24 - Step 6: Final answer
x = 61,237,242.36
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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.