Finding the Fourth Proportional to 122,106.15, 168,527.35 and 71,149.09
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Solution
The fourth proportional to 122,106.15, 168,527.35 and 71,149.09 is: 98,197.90
Step by Step Solution
- Step 1: Write the proportion equation
122,106.15 : 168,527.35 = 71,149.09 : x - Step 2: Convert to fraction form
122,106.15/168,527.35 = 71,149.09/x - Step 3: Cross multiply
122,106.15x = 168,527.35 × 71,149.09 - Step 4: Simplify right side
122,106.15x = 11,990,567,844.79 - Step 5: Solve for x
x = 11,990,567,844.79/122,106.15 - Step 6: Final answer
x = 98,197.90
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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.