Finding the Fourth Proportional to 212,278.30, 292,985.90 and 121,695.08
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Solution
The fourth proportional to 212,278.30, 292,985.90 and 121,695.08 is: 167,963.20
Step by Step Solution
- Step 1: Write the proportion equation
212,278.30 : 292,985.90 = 121,695.08 : x - Step 2: Convert to fraction form
212,278.30/292,985.90 = 121,695.08/x - Step 3: Cross multiply
212,278.30x = 292,985.90 × 121,695.08 - Step 4: Simplify right side
212,278.30x = 35,654,942,539.37 - Step 5: Solve for x
x = 35,654,942,539.37/212,278.30 - Step 6: Final answer
x = 167,963.20
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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.