Finding the Fourth Proportional to 189,721.62, 261,832.40 and 104,855.08
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Solution
The fourth proportional to 189,721.62, 261,832.40 and 104,855.08 is: 144,709.17
Step by Step Solution
- Step 1: Write the proportion equation
189,721.62 : 261,832.40 = 104,855.08 : x - Step 2: Convert to fraction form
189,721.62/261,832.40 = 104,855.08/x - Step 3: Cross multiply
189,721.62x = 261,832.40 × 104,855.08 - Step 4: Simplify right side
189,721.62x = 27,454,457,248.59 - Step 5: Solve for x
x = 27,454,457,248.59/189,721.62 - Step 6: Final answer
x = 144,709.17
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1.5x scale
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.