Finding the Fourth Proportional to 157,620.13, 217,516.49 and 86,001.66
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Solution
The fourth proportional to 157,620.13, 217,516.49 and 86,001.66 is: 118,682.68
Step by Step Solution
- Step 1: Write the proportion equation
157,620.13 : 217,516.49 = 86,001.66 : x - Step 2: Convert to fraction form
157,620.13/217,516.49 = 86,001.66/x - Step 3: Cross multiply
157,620.13x = 217,516.49 × 86,001.66 - Step 4: Simplify right side
157,620.13x = 18,706,779,217.37 - Step 5: Solve for x
x = 18,706,779,217.37/157,620.13 - Step 6: Final answer
x = 118,682.68
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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.