Finding the Fourth Proportional to 122,623.22, 169,214.60 and 71,640.68
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Solution
The fourth proportional to 122,623.22, 169,214.60 and 71,640.68 is: 98,860.95
Step by Step Solution
- Step 1: Write the proportion equation
122,623.22 : 169,214.60 = 71,640.68 : x - Step 2: Convert to fraction form
122,623.22/169,214.60 = 71,640.68/x - Step 3: Cross multiply
122,623.22x = 169,214.60 × 71,640.68 - Step 4: Simplify right side
122,623.22x = 12,122,648,342.96 - Step 5: Solve for x
x = 12,122,648,342.96/122,623.22 - Step 6: Final answer
x = 98,860.95
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1.5x scale
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.