Finding the Fourth Proportional to 143,617.68, 198,187.92 and 79,952.28
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Solution
The fourth proportional to 143,617.68, 198,187.92 and 79,952.28 is: 110,331.65
Step by Step Solution
- Step 1: Write the proportion equation
143,617.68 : 198,187.92 = 79,952.28 : x - Step 2: Convert to fraction form
143,617.68/198,187.92 = 79,952.28/x - Step 3: Cross multiply
143,617.68x = 198,187.92 × 79,952.28 - Step 4: Simplify right side
143,617.68x = 15,845,576,072.46 - Step 5: Solve for x
x = 15,845,576,072.46/143,617.68 - Step 6: Final answer
x = 110,331.65
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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.