Finding the Fourth Proportional to 159,536.26, 220,157.21 and 86,939.80
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Solution
The fourth proportional to 159,536.26, 220,157.21 and 86,939.80 is: 119,975.38
Step by Step Solution
- Step 1: Write the proportion equation
159,536.26 : 220,157.21 = 86,939.80 : x - Step 2: Convert to fraction form
159,536.26/220,157.21 = 86,939.80/x - Step 3: Cross multiply
159,536.26x = 220,157.21 × 86,939.80 - Step 4: Simplify right side
159,536.26x = 19,140,422,820.87 - Step 5: Solve for x
x = 19,140,422,820.87/159,536.26 - Step 6: Final answer
x = 119,975.38
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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.