Finding the Fourth Proportional to 107,811.30, 161,716.95 and 92,259.30
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Solution
The fourth proportional to 107,811.30, 161,716.95 and 92,259.30 is: 138,388.95
Step by Step Solution
- Step 1: Write the proportion equation
107,811.30 : 161,716.95 = 92,259.30 : x - Step 2: Convert to fraction form
107,811.30/161,716.95 = 92,259.30/x - Step 3: Cross multiply
107,811.30x = 161,716.95 × 92,259.30 - Step 4: Simplify right side
107,811.30x = 14,919,892,605.14 - Step 5: Solve for x
x = 14,919,892,605.14/107,811.30 - Step 6: Final answer
x = 138,388.95
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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.