Finding the Fourth Proportional to 137,851.68, 206,509.74 and 80,787.18
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Solution
The fourth proportional to 137,851.68, 206,509.74 and 80,787.18 is: 121,023.84
Step by Step Solution
- Step 1: Write the proportion equation
137,851.68 : 206,509.74 = 80,787.18 : x - Step 2: Convert to fraction form
137,851.68/206,509.74 = 80,787.18/x - Step 3: Cross multiply
137,851.68x = 206,509.74 × 80,787.18 - Step 4: Simplify right side
137,851.68x = 16,683,339,537.13 - Step 5: Solve for x
x = 16,683,339,537.13/137,851.68 - Step 6: Final answer
x = 121,023.84
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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.