Finding the Fourth Proportional to 159,965.92, 220,742.64 and 88,341.68
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Solution
The fourth proportional to 159,965.92, 220,742.64 and 88,341.68 is: 121,905.81
Step by Step Solution
- Step 1: Write the proportion equation
159,965.92 : 220,742.64 = 88,341.68 : x - Step 2: Convert to fraction form
159,965.92/220,742.64 = 88,341.68/x - Step 3: Cross multiply
159,965.92x = 220,742.64 × 88,341.68 - Step 4: Simplify right side
159,965.92x = 19,500,775,665.24 - Step 5: Solve for x
x = 19,500,775,665.24/159,965.92 - Step 6: Final answer
x = 121,905.81
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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.