Finding the Fourth Proportional to 159,755.21, 220,461.93 and 87,158.10
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Solution
The fourth proportional to 159,755.21, 220,461.93 and 87,158.10 is: 120,278.04
Step by Step Solution
- Step 1: Write the proportion equation
159,755.21 : 220,461.93 = 87,158.10 : x - Step 2: Convert to fraction form
159,755.21/220,461.93 = 87,158.10/x - Step 3: Cross multiply
159,755.21x = 220,461.93 × 87,158.10 - Step 4: Simplify right side
159,755.21x = 19,215,042,941.13 - Step 5: Solve for x
x = 19,215,042,941.13/159,755.21 - Step 6: Final answer
x = 120,278.04
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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.