Finding the Fourth Proportional to 130,236.36, 179,717.48 and 72,865.73
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Solution
The fourth proportional to 130,236.36, 179,717.48 and 72,865.73 is: 100,549.84
Step by Step Solution
- Step 1: Write the proportion equation
130,236.36 : 179,717.48 = 72,865.73 : x - Step 2: Convert to fraction form
130,236.36/179,717.48 = 72,865.73/x - Step 3: Cross multiply
130,236.36x = 179,717.48 × 72,865.73 - Step 4: Simplify right side
130,236.36x = 13,095,245,131.13 - Step 5: Solve for x
x = 13,095,245,131.13/130,236.36 - Step 6: Final answer
x = 100,549.84
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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.