Finding the Fourth Proportional to 122,939.51, 169,660.71 and 71,956.98
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Solution
The fourth proportional to 122,939.51, 169,660.71 and 71,956.98 is: 99,303.09
Step by Step Solution
- Step 1: Write the proportion equation
122,939.51 : 169,660.71 = 71,956.98 : x - Step 2: Convert to fraction form
122,939.51/169,660.71 = 71,956.98/x - Step 3: Cross multiply
122,939.51x = 169,660.71 × 71,956.98 - Step 4: Simplify right side
122,939.51x = 12,208,272,316.26 - Step 5: Solve for x
x = 12,208,272,316.26/122,939.51 - Step 6: Final answer
x = 99,303.09
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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.