Finding the Fourth Proportional to 129,487,114.70, 194,230,672.05 and 123,515,146.70
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Solution
The fourth proportional to 129,487,114.70, 194,230,672.05 and 123,515,146.70 is: 185,272,720.05
Step by Step Solution
- Step 1: Write the proportion equation
129,487,114.70 : 194,230,672.05 = 123,515,146.70 : x - Step 2: Convert to fraction form
129,487,114.70/194,230,672.05 = 123,515,146.70/x - Step 3: Cross multiply
129,487,114.70x = 194,230,672.05 × 123,515,146.70 - Step 4: Simplify right side
129,487,114.70x = 23,990,429,951,895,340 - Step 5: Solve for x
x = 23,990,429,951,895,340/129,487,114.70 - Step 6: Final answer
x = 185,272,720.05
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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.