Finding the Fourth Proportional to 151,686.12, 209,324.64 and 83,709.96
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Solution
The fourth proportional to 151,686.12, 209,324.64 and 83,709.96 is: 115,518.53
Step by Step Solution
- Step 1: Write the proportion equation
151,686.12 : 209,324.64 = 83,709.96 : x - Step 2: Convert to fraction form
151,686.12/209,324.64 = 83,709.96/x - Step 3: Cross multiply
151,686.12x = 209,324.64 × 83,709.96 - Step 4: Simplify right side
151,686.12x = 17,522,557,241.41 - Step 5: Solve for x
x = 17,522,557,241.41/151,686.12 - Step 6: Final answer
x = 115,518.53
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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.