Finding the Fourth Proportional to 140,578.84, 193,998.56 and 76,916.52
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Solution
The fourth proportional to 140,578.84, 193,998.56 and 76,916.52 is: 106,144.67
Step by Step Solution
- Step 1: Write the proportion equation
140,578.84 : 193,998.56 = 76,916.52 : x - Step 2: Convert to fraction form
140,578.84/193,998.56 = 76,916.52/x - Step 3: Cross multiply
140,578.84x = 193,998.56 × 76,916.52 - Step 4: Simplify right side
140,578.84x = 14,921,694,120.21 - Step 5: Solve for x
x = 14,921,694,120.21/140,578.84 - Step 6: Final answer
x = 106,144.67
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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.