Finding the Fourth Proportional to 107,921.20, 161,881.80 and 99,626.80
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Solution
The fourth proportional to 107,921.20, 161,881.80 and 99,626.80 is: 149,440.20
Step by Step Solution
- Step 1: Write the proportion equation
107,921.20 : 161,881.80 = 99,626.80 : x - Step 2: Convert to fraction form
107,921.20/161,881.80 = 99,626.80/x - Step 3: Cross multiply
107,921.20x = 161,881.80 × 99,626.80 - Step 4: Simplify right side
107,921.20x = 16,127,765,712.24 - Step 5: Solve for x
x = 16,127,765,712.24/107,921.20 - Step 6: Final answer
x = 149,440.20
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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.