Finding the Fourth Proportional to 157,718.18, 217,631.94 and 89,743.80
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Solution
The fourth proportional to 157,718.18, 217,631.94 and 89,743.80 is: 123,835.55
Step by Step Solution
- Step 1: Write the proportion equation
157,718.18 : 217,631.94 = 89,743.80 : x - Step 2: Convert to fraction form
157,718.18/217,631.94 = 89,743.80/x - Step 3: Cross multiply
157,718.18x = 217,631.94 × 89,743.80 - Step 4: Simplify right side
157,718.18x = 19,531,117,296.97 - Step 5: Solve for x
x = 19,531,117,296.97/157,718.18 - Step 6: Final answer
x = 123,835.55
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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.