Finding the Fourth Proportional to 143,067.99, 197,438.17 and 79,410.09
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Solution
The fourth proportional to 143,067.99, 197,438.17 and 79,410.09 is: 109,588.34
Step by Step Solution
- Step 1: Write the proportion equation
143,067.99 : 197,438.17 = 79,410.09 : x - Step 2: Convert to fraction form
143,067.99/197,438.17 = 79,410.09/x - Step 3: Cross multiply
143,067.99x = 197,438.17 × 79,410.09 - Step 4: Simplify right side
143,067.99x = 15,678,582,849.14 - Step 5: Solve for x
x = 15,678,582,849.14/143,067.99 - Step 6: Final answer
x = 109,588.34
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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.