Finding the Fourth Proportional to 153,742.26, 212,164.36 and 86,674.26
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Solution
The fourth proportional to 153,742.26, 212,164.36 and 86,674.26 is: 119,610.50
Step by Step Solution
- Step 1: Write the proportion equation
153,742.26 : 212,164.36 = 86,674.26 : x - Step 2: Convert to fraction form
153,742.26/212,164.36 = 86,674.26/x - Step 3: Cross multiply
153,742.26x = 212,164.36 × 86,674.26 - Step 4: Simplify right side
153,742.26x = 18,389,188,901.37 - Step 5: Solve for x
x = 18,389,188,901.37/153,742.26 - Step 6: Final answer
x = 119,610.50
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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.