Finding the Fourth Proportional to 138,421.80, 207,632.70 and 94,135.05
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Solution
The fourth proportional to 138,421.80, 207,632.70 and 94,135.05 is: 141,202.58
Step by Step Solution
- Step 1: Write the proportion equation
138,421.80 : 207,632.70 = 94,135.05 : x - Step 2: Convert to fraction form
138,421.80/207,632.70 = 94,135.05/x - Step 3: Cross multiply
138,421.80x = 207,632.70 × 94,135.05 - Step 4: Simplify right side
138,421.80x = 19,545,514,596.14 - Step 5: Solve for x
x = 19,545,514,596.14/138,421.80 - Step 6: Final answer
x = 141,202.58
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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.