Finding the Fourth Proportional to 128,872.25, 193,211.16 and 84,510.17
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Solution
The fourth proportional to 128,872.25, 193,211.16 and 84,510.17 is: 126,701.50
Step by Step Solution
- Step 1: Write the proportion equation
128,872.25 : 193,211.16 = 84,510.17 : x - Step 2: Convert to fraction form
128,872.25/193,211.16 = 84,510.17/x - Step 3: Cross multiply
128,872.25x = 193,211.16 × 84,510.17 - Step 4: Simplify right side
128,872.25x = 16,328,307,011.44 - Step 5: Solve for x
x = 16,328,307,011.44/128,872.25 - Step 6: Final answer
x = 126,701.50
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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.