Finding the Fourth Proportional to 135,285.12, 186,663.84 and 80,829.12
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Solution
The fourth proportional to 135,285.12, 186,663.84 and 80,829.12 is: 111,526.49
Step by Step Solution
- Step 1: Write the proportion equation
135,285.12 : 186,663.84 = 80,829.12 : x - Step 2: Convert to fraction form
135,285.12/186,663.84 = 80,829.12/x - Step 3: Cross multiply
135,285.12x = 186,663.84 × 80,829.12 - Step 4: Simplify right side
135,285.12x = 15,087,874,380.82 - Step 5: Solve for x
x = 15,087,874,380.82/135,285.12 - Step 6: Final answer
x = 111,526.49
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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.