Finding the Fourth Proportional to 212,071.13, 292,658.76 and 121,428.48
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Solution
The fourth proportional to 212,071.13, 292,658.76 and 121,428.48 is: 167,571.65
Step by Step Solution
- Step 1: Write the proportion equation
212,071.13 : 292,658.76 = 121,428.48 : x - Step 2: Convert to fraction form
212,071.13/292,658.76 = 121,428.48/x - Step 3: Cross multiply
212,071.13x = 292,658.76 × 121,428.48 - Step 4: Simplify right side
212,071.13x = 35,537,108,385.48 - Step 5: Solve for x
x = 35,537,108,385.48/212,071.13 - Step 6: Final answer
x = 167,571.65
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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.