Finding the Fourth Proportional to 207,903.40, 311,888.75 and 81,475.09
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Solution
The fourth proportional to 207,903.40, 311,888.75 and 81,475.09 is: 122,225.83
Step by Step Solution
- Step 1: Write the proportion equation
207,903.40 : 311,888.75 = 81,475.09 : x - Step 2: Convert to fraction form
207,903.40/311,888.75 = 81,475.09/x - Step 3: Cross multiply
207,903.40x = 311,888.75 × 81,475.09 - Step 4: Simplify right side
207,903.40x = 25,411,164,353.77 - Step 5: Solve for x
x = 25,411,164,353.77/207,903.40 - Step 6: Final answer
x = 122,225.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.