Finding the Fourth Proportional to 107,789.80, 161,684.70 and 92,237.80
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Solution
The fourth proportional to 107,789.80, 161,684.70 and 92,237.80 is: 138,356.70
Step by Step Solution
- Step 1: Write the proportion equation
107,789.80 : 161,684.70 = 92,237.80 : x - Step 2: Convert to fraction form
107,789.80/161,684.70 = 92,237.80/x - Step 3: Cross multiply
107,789.80x = 161,684.70 × 92,237.80 - Step 4: Simplify right side
107,789.80x = 14,913,441,021.66 - Step 5: Solve for x
x = 14,913,441,021.66/107,789.80 - Step 6: Final answer
x = 138,356.70
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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.