Finding the Fourth Proportional to 189,638.74, 261,679.17 and 104,750.74
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Solution
The fourth proportional to 189,638.74, 261,679.17 and 104,750.74 is: 144,543.71
Step by Step Solution
- Step 1: Write the proportion equation
189,638.74 : 261,679.17 = 104,750.74 : x - Step 2: Convert to fraction form
189,638.74/261,679.17 = 104,750.74/x - Step 3: Cross multiply
189,638.74x = 261,679.17 × 104,750.74 - Step 4: Simplify right side
189,638.74x = 27,411,086,700.09 - Step 5: Solve for x
x = 27,411,086,700.09/189,638.74 - Step 6: Final answer
x = 144,543.71
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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.