Finding the Fourth Proportional to 145,918.69, 201,367.79 and 78,850.69
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Solution
The fourth proportional to 145,918.69, 201,367.79 and 78,850.69 is: 108,813.95
Step by Step Solution
- Step 1: Write the proportion equation
145,918.69 : 201,367.79 = 78,850.69 : x - Step 2: Convert to fraction form
145,918.69/201,367.79 = 78,850.69/x - Step 3: Cross multiply
145,918.69x = 201,367.79 × 78,850.69 - Step 4: Simplify right side
145,918.69x = 15,877,988,583.29 - Step 5: Solve for x
x = 15,877,988,583.29/145,918.69 - Step 6: Final answer
x = 108,813.95
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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.