Finding the Fourth Proportional to 189,521.80, 261,539.36 and 104,638.24
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Solution
The fourth proportional to 189,521.80, 261,539.36 and 104,638.24 is: 144,400.37
Step by Step Solution
- Step 1: Write the proportion equation
189,521.80 : 261,539.36 = 104,638.24 : x - Step 2: Convert to fraction form
189,521.80/261,539.36 = 104,638.24/x - Step 3: Cross multiply
189,521.80x = 261,539.36 × 104,638.24 - Step 4: Simplify right side
189,521.80x = 27,367,018,321.13 - Step 5: Solve for x
x = 27,367,018,321.13/189,521.80 - Step 6: Final answer
x = 144,400.37
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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.