Finding the Fourth Proportional to 143,272.68, 197,712.36 and 79,608.84
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Solution
The fourth proportional to 143,272.68, 197,712.36 and 79,608.84 is: 109,858.01
Step by Step Solution
- Step 1: Write the proportion equation
143,272.68 : 197,712.36 = 79,608.84 : x - Step 2: Convert to fraction form
143,272.68/197,712.36 = 79,608.84/x - Step 3: Cross multiply
143,272.68x = 197,712.36 × 79,608.84 - Step 4: Simplify right side
143,272.68x = 15,739,651,633.26 - Step 5: Solve for x
x = 15,739,651,633.26/143,272.68 - Step 6: Final answer
x = 109,858.01
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1.5x scale
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.