Finding the Fourth Proportional to 107,537.80, 161,306.70 and 81,293.80
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Solution
The fourth proportional to 107,537.80, 161,306.70 and 81,293.80 is: 121,940.70
Step by Step Solution
- Step 1: Write the proportion equation
107,537.80 : 161,306.70 = 81,293.80 : x - Step 2: Convert to fraction form
107,537.80/161,306.70 = 81,293.80/x - Step 3: Cross multiply
107,537.80x = 161,306.70 × 81,293.80 - Step 4: Simplify right side
107,537.80x = 13,113,234,608.46 - Step 5: Solve for x
x = 13,113,234,608.46/107,537.80 - Step 6: Final answer
x = 121,940.70
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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.