Finding the Fourth Proportional to 122,861.30, 169,548.42 and 69,146.70
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Solution
The fourth proportional to 122,861.30, 169,548.42 and 69,146.70 is: 95,422.35
Step by Step Solution
- Step 1: Write the proportion equation
122,861.30 : 169,548.42 = 69,146.70 : x - Step 2: Convert to fraction form
122,861.30/169,548.42 = 69,146.70/x - Step 3: Cross multiply
122,861.30x = 169,548.42 × 69,146.70 - Step 4: Simplify right side
122,861.30x = 11,723,713,733.21 - Step 5: Solve for x
x = 11,723,713,733.21/122,861.30 - Step 6: Final answer
x = 95,422.35
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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.