Finding the Fourth Proportional to 157,986.71, 218,025.09 and 86,366.69
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Solution
The fourth proportional to 157,986.71, 218,025.09 and 86,366.69 is: 119,187.90
Step by Step Solution
- Step 1: Write the proportion equation
157,986.71 : 218,025.09 = 86,366.69 : x - Step 2: Convert to fraction form
157,986.71/218,025.09 = 86,366.69/x - Step 3: Cross multiply
157,986.71x = 218,025.09 × 86,366.69 - Step 4: Simplify right side
157,986.71x = 18,830,104,270.13 - Step 5: Solve for x
x = 18,830,104,270.13/157,986.71 - Step 6: Final answer
x = 119,187.90
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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.