Finding the Fourth Proportional to 212,373,453.41, 293,090,095.49 and 128,745,108.96
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Solution
The fourth proportional to 212,373,453.41, 293,090,095.49 and 128,745,108.96 is: 177,677,179.86
Step by Step Solution
- Step 1: Write the proportion equation
212,373,453.41 : 293,090,095.49 = 128,745,108.96 : x - Step 2: Convert to fraction form
212,373,453.41/293,090,095.49 = 128,745,108.96/x - Step 3: Cross multiply
212,373,453.41x = 293,090,095.49 × 128,745,108.96 - Step 4: Simplify right side
212,373,453.41x = 37,733,916,278,313,128 - Step 5: Solve for x
x = 37,733,916,278,313,128/212,373,453.41 - Step 6: Final answer
x = 177,677,179.86
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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.