Finding the Fourth Proportional to 128,901.20, 193,133.10 and 106,593.80
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Solution
The fourth proportional to 128,901.20, 193,133.10 and 106,593.80 is: 159,709.85
Step by Step Solution
- Step 1: Write the proportion equation
128,901.20 : 193,133.10 = 106,593.80 : x - Step 2: Convert to fraction form
128,901.20/193,133.10 = 106,593.80/x - Step 3: Cross multiply
128,901.20x = 193,133.10 × 106,593.80 - Step 4: Simplify right side
128,901.20x = 20,586,791,034.78 - Step 5: Solve for x
x = 20,586,791,034.78/128,901.20 - Step 6: Final answer
x = 159,709.85
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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.