Finding the Fourth Proportional to 107,843.80, 161,765.70 and 61,187.80
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Solution
The fourth proportional to 107,843.80, 161,765.70 and 61,187.80 is: 91,781.70
Step by Step Solution
- Step 1: Write the proportion equation
107,843.80 : 161,765.70 = 61,187.80 : x - Step 2: Convert to fraction form
107,843.80/161,765.70 = 61,187.80/x - Step 3: Cross multiply
107,843.80x = 161,765.70 × 61,187.80 - Step 4: Simplify right side
107,843.80x = 9,898,087,298.46 - Step 5: Solve for x
x = 9,898,087,298.46/107,843.80 - Step 6: Final answer
x = 91,781.70
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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.