Finding the Fourth Proportional to 189,720.17, 261,805.80 and 103,677.11
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Solution
The fourth proportional to 189,720.17, 261,805.80 and 103,677.11 is: 143,070.02
Step by Step Solution
- Step 1: Write the proportion equation
189,720.17 : 261,805.80 = 103,677.11 : x - Step 2: Convert to fraction form
189,720.17/261,805.80 = 103,677.11/x - Step 3: Cross multiply
189,720.17x = 261,805.80 × 103,677.11 - Step 4: Simplify right side
189,720.17x = 27,143,268,725.24 - Step 5: Solve for x
x = 27,143,268,725.24/189,720.17 - Step 6: Final answer
x = 143,070.02
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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.