Finding the Fourth Proportional to 147,627.20, 220,857.60 and 128,122.40
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Solution
The fourth proportional to 147,627.20, 220,857.60 and 128,122.40 is: 191,677.45
Step by Step Solution
- Step 1: Write the proportion equation
147,627.20 : 220,857.60 = 128,122.40 : x - Step 2: Convert to fraction form
147,627.20/220,857.60 = 128,122.40/x - Step 3: Cross multiply
147,627.20x = 220,857.60 × 128,122.40 - Step 4: Simplify right side
147,627.20x = 28,296,805,770.24 - Step 5: Solve for x
x = 28,296,805,770.24/147,627.20 - Step 6: Final answer
x = 191,677.45
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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.