Finding the Fourth Proportional to 122,619.70, 169,220.19 and 68,904.55
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Solution
The fourth proportional to 122,619.70, 169,220.19 and 68,904.55 is: 95,091.09
Step by Step Solution
- Step 1: Write the proportion equation
122,619.70 : 169,220.19 = 68,904.55 : x - Step 2: Convert to fraction form
122,619.70/169,220.19 = 68,904.55/x - Step 3: Cross multiply
122,619.70x = 169,220.19 × 68,904.55 - Step 4: Simplify right side
122,619.70x = 11,660,041,042.86 - Step 5: Solve for x
x = 11,660,041,042.86/122,619.70 - Step 6: Final answer
x = 95,091.09
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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.