Finding the Fourth Proportional to 122,890.64, 169,501.68 and 82,034.19
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Solution
The fourth proportional to 122,890.64, 169,501.68 and 82,034.19 is: 113,148.84
Step by Step Solution
- Step 1: Write the proportion equation
122,890.64 : 169,501.68 = 82,034.19 : x - Step 2: Convert to fraction form
122,890.64/169,501.68 = 82,034.19/x - Step 3: Cross multiply
122,890.64x = 169,501.68 × 82,034.19 - Step 4: Simplify right side
122,890.64x = 13,904,933,022.44 - Step 5: Solve for x
x = 13,904,933,022.44/122,890.64 - Step 6: Final answer
x = 113,148.84
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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.