Finding the Fourth Proportional to 122,446.10, 183,669.15 and 121,279.70
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Solution
The fourth proportional to 122,446.10, 183,669.15 and 121,279.70 is: 181,919.55
Step by Step Solution
- Step 1: Write the proportion equation
122,446.10 : 183,669.15 = 121,279.70 : x - Step 2: Convert to fraction form
122,446.10/183,669.15 = 121,279.70/x - Step 3: Cross multiply
122,446.10x = 183,669.15 × 121,279.70 - Step 4: Simplify right side
122,446.10x = 22,275,339,411.26 - Step 5: Solve for x
x = 22,275,339,411.26/122,446.10 - Step 6: Final answer
x = 181,919.55
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1.5x scale
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.