Finding the Fourth Proportional to 98,172.99, 135,470.74 and 55,150.14
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Solution
The fourth proportional to 98,172.99, 135,470.74 and 55,150.14 is: 76,102.70
Step by Step Solution
- Step 1: Write the proportion equation
98,172.99 : 135,470.74 = 55,150.14 : x - Step 2: Convert to fraction form
98,172.99/135,470.74 = 55,150.14/x - Step 3: Cross multiply
98,172.99x = 135,470.74 × 55,150.14 - Step 4: Simplify right side
98,172.99x = 7,471,230,001.15 - Step 5: Solve for x
x = 7,471,230,001.15/98,172.99 - Step 6: Final answer
x = 76,102.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.