Finding the Fourth Proportional to 121,029.80, 181,544.70 and 112,281.80
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Solution
The fourth proportional to 121,029.80, 181,544.70 and 112,281.80 is: 168,422.70
Step by Step Solution
- Step 1: Write the proportion equation
121,029.80 : 181,544.70 = 112,281.80 : x - Step 2: Convert to fraction form
121,029.80/181,544.70 = 112,281.80/x - Step 3: Cross multiply
121,029.80x = 181,544.70 × 112,281.80 - Step 4: Simplify right side
121,029.80x = 20,384,165,696.46 - Step 5: Solve for x
x = 20,384,165,696.46/121,029.80 - Step 6: Final answer
x = 168,422.70
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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.