Finding the Fourth Proportional to 127,805.96, 176,369.84 and 69,663.20
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Solution
The fourth proportional to 127,805.96, 176,369.84 and 69,663.20 is: 96,133.92
Step by Step Solution
- Step 1: Write the proportion equation
127,805.96 : 176,369.84 = 69,663.20 : x - Step 2: Convert to fraction form
127,805.96/176,369.84 = 69,663.20/x - Step 3: Cross multiply
127,805.96x = 176,369.84 × 69,663.20 - Step 4: Simplify right side
127,805.96x = 12,286,487,437.89 - Step 5: Solve for x
x = 12,286,487,437.89/127,805.96 - Step 6: Final answer
x = 96,133.92
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1.5x scale
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.