Finding the Fourth Proportional to 159,742.20, 220,441.48 and 88,129.08
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Solution
The fourth proportional to 159,742.20, 220,441.48 and 88,129.08 is: 121,616.61
Step by Step Solution
- Step 1: Write the proportion equation
159,742.20 : 220,441.48 = 88,129.08 : x - Step 2: Convert to fraction form
159,742.20/220,441.48 = 88,129.08/x - Step 3: Cross multiply
159,742.20x = 220,441.48 × 88,129.08 - Step 4: Simplify right side
159,742.20x = 19,427,304,826.24 - Step 5: Solve for x
x = 19,427,304,826.24/159,742.20 - Step 6: Final answer
x = 121,616.61
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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.