Finding the Fourth Proportional to 212,340.81, 293,031.36 and 121,702.17
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Solution
The fourth proportional to 212,340.81, 293,031.36 and 121,702.17 is: 167,949.59
Step by Step Solution
- Step 1: Write the proportion equation
212,340.81 : 293,031.36 = 121,702.17 : x - Step 2: Convert to fraction form
212,340.81/293,031.36 = 121,702.17/x - Step 3: Cross multiply
212,340.81x = 293,031.36 × 121,702.17 - Step 4: Simplify right side
212,340.81x = 35,662,552,390.05 - Step 5: Solve for x
x = 35,662,552,390.05/212,340.81 - Step 6: Final answer
x = 167,949.59
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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.