Finding the Fourth Proportional to 129,976.81, 179,378.99 and 73,398.49
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Solution
The fourth proportional to 129,976.81, 179,378.99 and 73,398.49 is: 101,296.12
Step by Step Solution
- Step 1: Write the proportion equation
129,976.81 : 179,378.99 = 73,398.49 : x - Step 2: Convert to fraction form
129,976.81/179,378.99 = 73,398.49/x - Step 3: Cross multiply
129,976.81x = 179,378.99 × 73,398.49 - Step 4: Simplify right side
129,976.81x = 13,166,146,636.73 - Step 5: Solve for x
x = 13,166,146,636.73/129,976.81 - Step 6: Final answer
x = 101,296.12
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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.