Finding the Fourth Proportional to 137,138.84, 205,625.28 and 89,696.68
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Solution
The fourth proportional to 137,138.84, 205,625.28 and 89,696.68 is: 134,490.75
Step by Step Solution
- Step 1: Write the proportion equation
137,138.84 : 205,625.28 = 89,696.68 : x - Step 2: Convert to fraction form
137,138.84/205,625.28 = 89,696.68/x - Step 3: Cross multiply
137,138.84x = 205,625.28 × 89,696.68 - Step 4: Simplify right side
137,138.84x = 18,443,904,940.07 - Step 5: Solve for x
x = 18,443,904,940.07/137,138.84 - Step 6: Final answer
x = 134,490.75
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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.