Finding the Fourth Proportional to 140,905.68, 209,986.08 and 136,633.68
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Solution
The fourth proportional to 140,905.68, 209,986.08 and 136,633.68 is: 203,619.69
Step by Step Solution
- Step 1: Write the proportion equation
140,905.68 : 209,986.08 = 136,633.68 : x - Step 2: Convert to fraction form
140,905.68/209,986.08 = 136,633.68/x - Step 3: Cross multiply
140,905.68x = 209,986.08 × 136,633.68 - Step 4: Simplify right side
140,905.68x = 28,691,170,859.17 - Step 5: Solve for x
x = 28,691,170,859.17/140,905.68 - Step 6: Final answer
x = 203,619.69
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.