Finding the Fourth Proportional to 115,368.15, 161,121.75 and 115,368.15
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Solution
The fourth proportional to 115,368.15, 161,121.75 and 115,368.15 is: 161,121.75
Step by Step Solution
- Step 1: Write the proportion equation
115,368.15 : 161,121.75 = 115,368.15 : x - Step 2: Convert to fraction form
115,368.15/161,121.75 = 115,368.15/x - Step 3: Cross multiply
115,368.15x = 161,121.75 × 115,368.15 - Step 4: Simplify right side
115,368.15x = 18,588,318,222.26 - Step 5: Solve for x
x = 18,588,318,222.26/115,368.15 - Step 6: Final answer
x = 161,121.75
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.