Finding the Fourth Proportional to 212,423.14, 293,109.63 and 121,762.42
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Solution
The fourth proportional to 212,423.14, 293,109.63 and 121,762.42 is: 168,012.48
Step by Step Solution
- Step 1: Write the proportion equation
212,423.14 : 293,109.63 = 121,762.42 : x - Step 2: Convert to fraction form
212,423.14/293,109.63 = 121,762.42/x - Step 3: Cross multiply
212,423.14x = 293,109.63 × 121,762.42 - Step 4: Simplify right side
212,423.14x = 35,689,737,874.10 - Step 5: Solve for x
x = 35,689,737,874.10/212,423.14 - Step 6: Final answer
x = 168,012.48
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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.