Finding the Fourth Proportional to 107,811.80, 161,717.70 and 92,259.80
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Solution
The fourth proportional to 107,811.80, 161,717.70 and 92,259.80 is: 138,389.70
Step by Step Solution
- Step 1: Write the proportion equation
107,811.80 : 161,717.70 = 92,259.80 : x - Step 2: Convert to fraction form
107,811.80/161,717.70 = 92,259.80/x - Step 3: Cross multiply
107,811.80x = 161,717.70 × 92,259.80 - Step 4: Simplify right side
107,811.80x = 14,920,042,658.46 - Step 5: Solve for x
x = 14,920,042,658.46/107,811.80 - Step 6: Final answer
x = 138,389.70
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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.