Finding the Fourth Proportional to 157,757.63, 217,714.35 and 86,144.30
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Solution
The fourth proportional to 157,757.63, 217,714.35 and 86,144.30 is: 118,883.95
Step by Step Solution
- Step 1: Write the proportion equation
157,757.63 : 217,714.35 = 86,144.30 : x - Step 2: Convert to fraction form
157,757.63/217,714.35 = 86,144.30/x - Step 3: Cross multiply
157,757.63x = 217,714.35 × 86,144.30 - Step 4: Simplify right side
157,757.63x = 18,754,850,280.71 - Step 5: Solve for x
x = 18,754,850,280.71/157,757.63 - Step 6: Final answer
x = 118,883.95
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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.