Finding the Fourth Proportional to 129,953.09, 179,336.76 and 76,239.02
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Solution
The fourth proportional to 129,953.09, 179,336.76 and 76,239.02 is: 105,210.73
Step by Step Solution
- Step 1: Write the proportion equation
129,953.09 : 179,336.76 = 76,239.02 : x - Step 2: Convert to fraction form
129,953.09/179,336.76 = 76,239.02/x - Step 3: Cross multiply
129,953.09x = 179,336.76 × 76,239.02 - Step 4: Simplify right side
129,953.09x = 13,672,458,832.38 - Step 5: Solve for x
x = 13,672,458,832.38/129,953.09 - Step 6: Final answer
x = 105,210.73
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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.