Finding the Fourth Proportional to 143,631.63, 215,354.90 and 68,749.97
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Solution
The fourth proportional to 143,631.63, 215,354.90 and 68,749.97 is: 103,080.65
Step by Step Solution
- Step 1: Write the proportion equation
143,631.63 : 215,354.90 = 68,749.97 : x - Step 2: Convert to fraction form
143,631.63/215,354.90 = 68,749.97/x - Step 3: Cross multiply
143,631.63x = 215,354.90 × 68,749.97 - Step 4: Simplify right side
143,631.63x = 14,805,642,009.45 - Step 5: Solve for x
x = 14,805,642,009.45/143,631.63 - Step 6: Final answer
x = 103,080.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.