Finding the Fourth Proportional to 138,569.27, 207,698.38 and 68,497.79
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Solution
The fourth proportional to 138,569.27, 207,698.38 and 68,497.79 is: 102,669.80
Step by Step Solution
- Step 1: Write the proportion equation
138,569.27 : 207,698.38 = 68,497.79 : x - Step 2: Convert to fraction form
138,569.27/207,698.38 = 68,497.79/x - Step 3: Cross multiply
138,569.27x = 207,698.38 × 68,497.79 - Step 4: Simplify right side
138,569.27x = 14,226,878,806.84 - Step 5: Solve for x
x = 14,226,878,806.84/138,569.27 - Step 6: Final answer
x = 102,669.80
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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.