Finding the Fourth Proportional to 157,729.95, 217,670.63 and 86,112.99
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Solution
The fourth proportional to 157,729.95, 217,670.63 and 86,112.99 is: 118,837.72
Step by Step Solution
- Step 1: Write the proportion equation
157,729.95 : 217,670.63 = 86,112.99 : x - Step 2: Convert to fraction form
157,729.95/217,670.63 = 86,112.99/x - Step 3: Cross multiply
157,729.95x = 217,670.63 × 86,112.99 - Step 4: Simplify right side
157,729.95x = 18,744,268,353.92 - Step 5: Solve for x
x = 18,744,268,353.92/157,729.95 - Step 6: Final answer
x = 118,837.72
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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.