Finding the Fourth Proportional to 157,831,481.70, 236,747,222.55 and 129,487,961.70
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Solution
The fourth proportional to 157,831,481.70, 236,747,222.55 and 129,487,961.70 is: 194,231,942.55
Step by Step Solution
- Step 1: Write the proportion equation
157,831,481.70 : 236,747,222.55 = 129,487,961.70 : x - Step 2: Convert to fraction form
157,831,481.70/236,747,222.55 = 129,487,961.70/x - Step 3: Cross multiply
157,831,481.70x = 236,747,222.55 × 129,487,961.70 - Step 4: Simplify right side
157,831,481.70x = 30,655,915,286,135,780 - Step 5: Solve for x
x = 30,655,915,286,135,780/157,831,481.70 - Step 6: Final answer
x = 194,231,942.55
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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.