Finding the Fourth Proportional to 157,837.69, 217,808.00 and 86,203.99
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Solution
The fourth proportional to 157,837.69, 217,808.00 and 86,203.99 is: 118,957.13
Step by Step Solution
- Step 1: Write the proportion equation
157,837.69 : 217,808.00 = 86,203.99 : x - Step 2: Convert to fraction form
157,837.69/217,808.00 = 86,203.99/x - Step 3: Cross multiply
157,837.69x = 217,808.00 × 86,203.99 - Step 4: Simplify right side
157,837.69x = 18,775,917,780.39 - Step 5: Solve for x
x = 18,775,917,780.39/157,837.69 - Step 6: Final answer
x = 118,957.13
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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.