Finding the Fourth Proportional to 212,045.52, 292,642.98 and 121,408.68
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Solution
The fourth proportional to 212,045.52, 292,642.98 and 121,408.68 is: 167,555.52
Step by Step Solution
- Step 1: Write the proportion equation
212,045.52 : 292,642.98 = 121,408.68 : x - Step 2: Convert to fraction form
212,045.52/292,642.98 = 121,408.68/x - Step 3: Cross multiply
212,045.52x = 292,642.98 × 121,408.68 - Step 4: Simplify right side
212,045.52x = 35,529,397,913.07 - Step 5: Solve for x
x = 35,529,397,913.07/212,045.52 - Step 6: Final answer
x = 167,555.52
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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.