Finding the Fourth Proportional to 189,666.93, 261,758.46 and 103,638.99
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Solution
The fourth proportional to 189,666.93, 261,758.46 and 103,638.99 is: 143,031.69
Step by Step Solution
- Step 1: Write the proportion equation
189,666.93 : 261,758.46 = 103,638.99 : x - Step 2: Convert to fraction form
189,666.93/261,758.46 = 103,638.99/x - Step 3: Cross multiply
189,666.93x = 261,758.46 × 103,638.99 - Step 4: Simplify right side
189,666.93x = 27,128,382,418.36 - Step 5: Solve for x
x = 27,128,382,418.36/189,666.93 - Step 6: Final answer
x = 143,031.69
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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.