Finding the Fourth Proportional to 115,711.58, 159,636.33 and 72,665.75
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Solution
The fourth proportional to 115,711.58, 159,636.33 and 72,665.75 is: 100,250.07
Step by Step Solution
- Step 1: Write the proportion equation
115,711.58 : 159,636.33 = 72,665.75 : x - Step 2: Convert to fraction form
115,711.58/159,636.33 = 72,665.75/x - Step 3: Cross multiply
115,711.58x = 159,636.33 × 72,665.75 - Step 4: Simplify right side
115,711.58x = 11,600,093,646.70 - Step 5: Solve for x
x = 11,600,093,646.70/115,711.58 - Step 6: Final answer
x = 100,250.07
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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.