Finding the Fourth Proportional to 115,968.96, 160,015.68 and 68,231.52
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Solution
The fourth proportional to 115,968.96, 160,015.68 and 68,231.52 is: 94,146.86
Step by Step Solution
- Step 1: Write the proportion equation
115,968.96 : 160,015.68 = 68,231.52 : x - Step 2: Convert to fraction form
115,968.96/160,015.68 = 68,231.52/x - Step 3: Cross multiply
115,968.96x = 160,015.68 × 68,231.52 - Step 4: Simplify right side
115,968.96x = 10,918,113,070.23 - Step 5: Solve for x
x = 10,918,113,070.23/115,968.96 - Step 6: Final answer
x = 94,146.86
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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.