Finding the Fourth Proportional to 145,287.49, 218,259.30 and 86,161.94
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Solution
The fourth proportional to 145,287.49, 218,259.30 and 86,161.94 is: 129,437.47
Step by Step Solution
- Step 1: Write the proportion equation
145,287.49 : 218,259.30 = 86,161.94 : x - Step 2: Convert to fraction form
145,287.49/218,259.30 = 86,161.94/x - Step 3: Cross multiply
145,287.49x = 218,259.30 × 86,161.94 - Step 4: Simplify right side
145,287.49x = 18,805,644,280.23 - Step 5: Solve for x
x = 18,805,644,280.23/145,287.49 - Step 6: Final answer
x = 129,437.47
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.