Finding the Fourth Proportional to 212,215.39, 292,898.84 and 121,632.06
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Solution
The fourth proportional to 212,215.39, 292,898.84 and 121,632.06 is: 167,876.09
Step by Step Solution
- Step 1: Write the proportion equation
212,215.39 : 292,898.84 = 121,632.06 : x - Step 2: Convert to fraction form
212,215.39/292,898.84 = 121,632.06/x - Step 3: Cross multiply
212,215.39x = 292,898.84 × 121,632.06 - Step 4: Simplify right side
212,215.39x = 35,625,889,128.77 - Step 5: Solve for x
x = 35,625,889,128.77/212,215.39 - Step 6: Final answer
x = 167,876.09
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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.