Finding the Fourth Proportional to 127,805.19, 176,371.86 and 74,122.03
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Solution
The fourth proportional to 127,805.19, 176,371.86 and 74,122.03 is: 102,288.81
Step by Step Solution
- Step 1: Write the proportion equation
127,805.19 : 176,371.86 = 74,122.03 : x - Step 2: Convert to fraction form
127,805.19/176,371.86 = 74,122.03/x - Step 3: Cross multiply
127,805.19x = 176,371.86 × 74,122.03 - Step 4: Simplify right side
127,805.19x = 13,073,039,927.47 - Step 5: Solve for x
x = 13,073,039,927.47/127,805.19 - Step 6: Final answer
x = 102,288.81
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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.