Finding the Fourth Proportional to 127,712.79, 176,243.70 and 74,028.96
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Solution
The fourth proportional to 127,712.79, 176,243.70 and 74,028.96 is: 102,159.99
Step by Step Solution
- Step 1: Write the proportion equation
127,712.79 : 176,243.70 = 74,028.96 : x - Step 2: Convert to fraction form
127,712.79/176,243.70 = 74,028.96/x - Step 3: Cross multiply
127,712.79x = 176,243.70 × 74,028.96 - Step 4: Simplify right side
127,712.79x = 13,047,137,817.55 - Step 5: Solve for x
x = 13,047,137,817.55/127,712.79 - Step 6: Final answer
x = 102,159.99
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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.