Finding the Fourth Proportional to 157,688.20, 236,532.30 and 107,921.80
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Solution
The fourth proportional to 157,688.20, 236,532.30 and 107,921.80 is: 161,882.70
Step by Step Solution
- Step 1: Write the proportion equation
157,688.20 : 236,532.30 = 107,921.80 : x - Step 2: Convert to fraction form
157,688.20/236,532.30 = 107,921.80/x - Step 3: Cross multiply
157,688.20x = 236,532.30 × 107,921.80 - Step 4: Simplify right side
157,688.20x = 25,526,991,574.14 - Step 5: Solve for x
x = 25,526,991,574.14/157,688.20 - Step 6: Final answer
x = 161,882.70
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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.