Finding the Fourth Proportional to 122,472.36, 169,021.62 and 68,760.90
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Solution
The fourth proportional to 122,472.36, 169,021.62 and 68,760.90 is: 94,895.52
Step by Step Solution
- Step 1: Write the proportion equation
122,472.36 : 169,021.62 = 68,760.90 : x - Step 2: Convert to fraction form
122,472.36/169,021.62 = 68,760.90/x - Step 3: Cross multiply
122,472.36x = 169,021.62 × 68,760.90 - Step 4: Simplify right side
122,472.36x = 11,622,078,710.66 - Step 5: Solve for x
x = 11,622,078,710.66/122,472.36 - Step 6: Final answer
x = 94,895.52
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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.