Finding the Fourth Proportional to 107,905.68, 161,890.11 and 55,351.80
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Solution
The fourth proportional to 107,905.68, 161,890.11 and 55,351.80 is: 83,043.90
Step by Step Solution
- Step 1: Write the proportion equation
107,905.68 : 161,890.11 = 55,351.80 : x - Step 2: Convert to fraction form
107,905.68/161,890.11 = 55,351.80/x - Step 3: Cross multiply
107,905.68x = 161,890.11 × 55,351.80 - Step 4: Simplify right side
107,905.68x = 8,960,908,990.70 - Step 5: Solve for x
x = 8,960,908,990.70/107,905.68 - Step 6: Final answer
x = 83,043.90
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1.5x scale
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.