Finding the Fourth Proportional to 138,479.09, 207,718.70 and 43,718.88
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Solution
The fourth proportional to 138,479.09, 207,718.70 and 43,718.88 is: 65,578.34
Step by Step Solution
- Step 1: Write the proportion equation
138,479.09 : 207,718.70 = 43,718.88 : x - Step 2: Convert to fraction form
138,479.09/207,718.70 = 43,718.88/x - Step 3: Cross multiply
138,479.09x = 207,718.70 × 43,718.88 - Step 4: Simplify right side
138,479.09x = 9,081,228,700.46 - Step 5: Solve for x
x = 9,081,228,700.46/138,479.09 - Step 6: Final answer
x = 65,578.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.