Finding the Fourth Proportional to 189,715.24, 261,803.80 and 103,672.31
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Solution
The fourth proportional to 189,715.24, 261,803.80 and 103,672.31 is: 143,066.02
Step by Step Solution
- Step 1: Write the proportion equation
189,715.24 : 261,803.80 = 103,672.31 : x - Step 2: Convert to fraction form
189,715.24/261,803.80 = 103,672.31/x - Step 3: Cross multiply
189,715.24x = 261,803.80 × 103,672.31 - Step 4: Simplify right side
189,715.24x = 27,141,804,712.78 - Step 5: Solve for x
x = 27,141,804,712.78/189,715.24 - Step 6: Final answer
x = 143,066.02
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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.