Finding the Fourth Proportional to 126,574.19, 189,515.43 and 91,070.99
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Solution
The fourth proportional to 126,574.19, 189,515.43 and 91,070.99 is: 136,357.64
Step by Step Solution
- Step 1: Write the proportion equation
126,574.19 : 189,515.43 = 91,070.99 : x - Step 2: Convert to fraction form
126,574.19/189,515.43 = 91,070.99/x - Step 3: Cross multiply
126,574.19x = 189,515.43 × 91,070.99 - Step 4: Simplify right side
126,574.19x = 17,259,357,830.38 - Step 5: Solve for x
x = 17,259,357,830.38/126,574.19 - Step 6: Final answer
x = 136,357.64
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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.