Finding the Fourth Proportional to 138,324.65, 190,886.09 and 77,895.99
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Solution
The fourth proportional to 138,324.65, 190,886.09 and 77,895.99 is: 107,495.38
Step by Step Solution
- Step 1: Write the proportion equation
138,324.65 : 190,886.09 = 77,895.99 : x - Step 2: Convert to fraction form
138,324.65/190,886.09 = 77,895.99/x - Step 3: Cross multiply
138,324.65x = 190,886.09 × 77,895.99 - Step 4: Simplify right side
138,324.65x = 14,869,260,568.30 - Step 5: Solve for x
x = 14,869,260,568.30/138,324.65 - Step 6: Final answer
x = 107,495.38
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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.