Finding the Fourth Proportional to 128,114,942.76, 176,798,716.81 and 69,377,672.27
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Solution
The fourth proportional to 128,114,942.76, 176,798,716.81 and 69,377,672.27 is: 95,741,239.61
Step by Step Solution
- Step 1: Write the proportion equation
128,114,942.76 : 176,798,716.81 = 69,377,672.27 : x - Step 2: Convert to fraction form
128,114,942.76/176,798,716.81 = 69,377,672.27/x - Step 3: Cross multiply
128,114,942.76x = 176,798,716.81 × 69,377,672.27 - Step 4: Simplify right side
128,114,942.76x = 12,265,883,432,869,272 - Step 5: Solve for x
x = 12,265,883,432,869,272/128,114,942.76 - Step 6: Final answer
x = 95,741,239.61
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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.