Finding the Fourth Proportional to 143,807.25, 198,454.62 and 79,275.09
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Solution
The fourth proportional to 143,807.25, 198,454.62 and 79,275.09 is: 109,399.96
Step by Step Solution
- Step 1: Write the proportion equation
143,807.25 : 198,454.62 = 79,275.09 : x - Step 2: Convert to fraction form
143,807.25/198,454.62 = 79,275.09/x - Step 3: Cross multiply
143,807.25x = 198,454.62 × 79,275.09 - Step 4: Simplify right side
143,807.25x = 15,732,507,861.42 - Step 5: Solve for x
x = 15,732,507,861.42/143,807.25 - Step 6: Final answer
x = 109,399.96
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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.