Finding the Fourth Proportional to 122,623.11, 169,220.48 and 71,638.74
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Solution
The fourth proportional to 122,623.11, 169,220.48 and 71,638.74 is: 98,861.80
Step by Step Solution
- Step 1: Write the proportion equation
122,623.11 : 169,220.48 = 71,638.74 : x - Step 2: Convert to fraction form
122,623.11/169,220.48 = 71,638.74/x - Step 3: Cross multiply
122,623.11x = 169,220.48 × 71,638.74 - Step 4: Simplify right side
122,623.11x = 12,122,741,611.20 - Step 5: Solve for x
x = 12,122,741,611.20/122,623.11 - Step 6: Final answer
x = 98,861.80
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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.