Finding the Fourth Proportional to 98,900.54, 136,560.96 and 91,343.84
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Solution
The fourth proportional to 98,900.54, 136,560.96 and 91,343.84 is: 126,126.75
Step by Step Solution
- Step 1: Write the proportion equation
98,900.54 : 136,560.96 = 91,343.84 : x - Step 2: Convert to fraction form
98,900.54/136,560.96 = 91,343.84/x - Step 3: Cross multiply
98,900.54x = 136,560.96 × 91,343.84 - Step 4: Simplify right side
98,900.54x = 12,474,002,821.89 - Step 5: Solve for x
x = 12,474,002,821.89/98,900.54 - Step 6: Final answer
x = 126,126.75
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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.