Finding the Fourth Proportional to 122,462.10, 169,005.26 and 81,556.09
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Solution
The fourth proportional to 122,462.10, 169,005.26 and 81,556.09 is: 112,552.44
Step by Step Solution
- Step 1: Write the proportion equation
122,462.10 : 169,005.26 = 81,556.09 : x - Step 2: Convert to fraction form
122,462.10/169,005.26 = 81,556.09/x - Step 3: Cross multiply
122,462.10x = 169,005.26 × 81,556.09 - Step 4: Simplify right side
122,462.10x = 13,783,407,976.41 - Step 5: Solve for x
x = 13,783,407,976.41/122,462.10 - Step 6: Final answer
x = 112,552.44
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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.