Finding the Fourth Proportional to 122,689.54, 169,312.29 and 68,974.09
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Solution
The fourth proportional to 122,689.54, 169,312.29 and 68,974.09 is: 95,184.65
Step by Step Solution
- Step 1: Write the proportion equation
122,689.54 : 169,312.29 = 68,974.09 : x - Step 2: Convert to fraction form
122,689.54/169,312.29 = 68,974.09/x - Step 3: Cross multiply
122,689.54x = 169,312.29 × 68,974.09 - Step 4: Simplify right side
122,689.54x = 11,678,161,128.57 - Step 5: Solve for x
x = 11,678,161,128.57/122,689.54 - Step 6: Final answer
x = 95,184.65
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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.