Finding the Fourth Proportional to 197,782.88, 272,941.68 and 107,138.84
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Solution
The fourth proportional to 197,782.88, 272,941.68 and 107,138.84 is: 147,852.31
Step by Step Solution
- Step 1: Write the proportion equation
197,782.88 : 272,941.68 = 107,138.84 : x - Step 2: Convert to fraction form
197,782.88/272,941.68 = 107,138.84/x - Step 3: Cross multiply
197,782.88x = 272,941.68 × 107,138.84 - Step 4: Simplify right side
197,782.88x = 29,242,654,982.85 - Step 5: Solve for x
x = 29,242,654,982.85/197,782.88 - Step 6: Final answer
x = 147,852.31
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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.