Finding the Fourth Proportional to 139,624.45, 207,857.49 and 138,794.08
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Solution
The fourth proportional to 139,624.45, 207,857.49 and 138,794.08 is: 206,621.33
Step by Step Solution
- Step 1: Write the proportion equation
139,624.45 : 207,857.49 = 138,794.08 : x - Step 2: Convert to fraction form
139,624.45/207,857.49 = 138,794.08/x - Step 3: Cross multiply
139,624.45x = 207,857.49 × 138,794.08 - Step 4: Simplify right side
139,624.45x = 28,849,389,095.66 - Step 5: Solve for x
x = 28,849,389,095.66/139,624.45 - Step 6: Final answer
x = 206,621.33
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.