Finding the Fourth Proportional to 122,717.64, 169,348.12 and 68,269.56
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Solution
The fourth proportional to 122,717.64, 169,348.12 and 68,269.56 is: 94,210.76
Step by Step Solution
- Step 1: Write the proportion equation
122,717.64 : 169,348.12 = 68,269.56 : x - Step 2: Convert to fraction form
122,717.64/169,348.12 = 68,269.56/x - Step 3: Cross multiply
122,717.64x = 169,348.12 × 68,269.56 - Step 4: Simplify right side
122,717.64x = 11,561,321,639.23 - Step 5: Solve for x
x = 11,561,321,639.23/122,717.64 - Step 6: Final answer
x = 94,210.76
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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.