Finding the Fourth Proportional to 189,366.03, 261,088.74 and 121,271.05
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Solution
The fourth proportional to 189,366.03, 261,088.74 and 121,271.05 is: 167,202.67
Step by Step Solution
- Step 1: Write the proportion equation
189,366.03 : 261,088.74 = 121,271.05 : x - Step 2: Convert to fraction form
189,366.03/261,088.74 = 121,271.05/x - Step 3: Cross multiply
189,366.03x = 261,088.74 × 121,271.05 - Step 4: Simplify right side
189,366.03x = 31,662,505,576.10 - Step 5: Solve for x
x = 31,662,505,576.10/189,366.03 - Step 6: Final answer
x = 167,202.67
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.