Finding the Fourth Proportional to 115,249.24, 158,984.66 and 76,996.56
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Solution
The fourth proportional to 115,249.24, 158,984.66 and 76,996.56 is: 106,215.65
Step by Step Solution
- Step 1: Write the proportion equation
115,249.24 : 158,984.66 = 76,996.56 : x - Step 2: Convert to fraction form
115,249.24/158,984.66 = 76,996.56/x - Step 3: Cross multiply
115,249.24x = 158,984.66 × 76,996.56 - Step 4: Simplify right side
115,249.24x = 12,241,272,105.26 - Step 5: Solve for x
x = 12,241,272,105.26/115,249.24 - Step 6: Final answer
x = 106,215.65
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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.