Finding the Fourth Proportional to 181,281.17, 272,013.89 and 81,420.99
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Solution
The fourth proportional to 181,281.17, 272,013.89 and 81,420.99 is: 122,172.87
Step by Step Solution
- Step 1: Write the proportion equation
181,281.17 : 272,013.89 = 81,420.99 : x - Step 2: Convert to fraction form
181,281.17/272,013.89 = 81,420.99/x - Step 3: Cross multiply
181,281.17x = 272,013.89 × 81,420.99 - Step 4: Simplify right side
181,281.17x = 22,147,639,810.45 - Step 5: Solve for x
x = 22,147,639,810.45/181,281.17 - Step 6: Final answer
x = 122,172.87
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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.