Finding the Fourth Proportional to 122,640.20, 183,960.30 and 93,115.70
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Solution
The fourth proportional to 122,640.20, 183,960.30 and 93,115.70 is: 139,673.55
Step by Step Solution
- Step 1: Write the proportion equation
122,640.20 : 183,960.30 = 93,115.70 : x - Step 2: Convert to fraction form
122,640.20/183,960.30 = 93,115.70/x - Step 3: Cross multiply
122,640.20x = 183,960.30 × 93,115.70 - Step 4: Simplify right side
122,640.20x = 17,129,592,106.71 - Step 5: Solve for x
x = 17,129,592,106.71/122,640.20 - Step 6: Final answer
x = 139,673.55
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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.