Finding the Fourth Proportional to 133,318.70, 199,905.15 and 54,343.70
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Solution
The fourth proportional to 133,318.70, 199,905.15 and 54,343.70 is: 81,485.83
Step by Step Solution
- Step 1: Write the proportion equation
133,318.70 : 199,905.15 = 54,343.70 : x - Step 2: Convert to fraction form
133,318.70/199,905.15 = 54,343.70/x - Step 3: Cross multiply
133,318.70x = 199,905.15 × 54,343.70 - Step 4: Simplify right side
133,318.70x = 10,863,585,500.06 - Step 5: Solve for x
x = 10,863,585,500.06/133,318.70 - Step 6: Final answer
x = 81,485.83
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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.