Finding the Fourth Proportional to 209,956.91, 289,746.05 and 129,437.64
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Solution
The fourth proportional to 209,956.91, 289,746.05 and 129,437.64 is: 178,627.34
Step by Step Solution
- Step 1: Write the proportion equation
209,956.91 : 289,746.05 = 129,437.64 : x - Step 2: Convert to fraction form
209,956.91/289,746.05 = 129,437.64/x - Step 3: Cross multiply
209,956.91x = 289,746.05 × 129,437.64 - Step 4: Simplify right side
209,956.91x = 37,504,044,264.13 - Step 5: Solve for x
x = 37,504,044,264.13/209,956.91 - Step 6: Final answer
x = 178,627.34
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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.