Finding the Fourth Proportional to 132,901.20, 199,351.80 and 121,237.20
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Solution
The fourth proportional to 132,901.20, 199,351.80 and 121,237.20 is: 181,855.80
Step by Step Solution
- Step 1: Write the proportion equation
132,901.20 : 199,351.80 = 121,237.20 : x - Step 2: Convert to fraction form
132,901.20/199,351.80 = 121,237.20/x - Step 3: Cross multiply
132,901.20x = 199,351.80 × 121,237.20 - Step 4: Simplify right side
132,901.20x = 24,168,854,046.96 - Step 5: Solve for x
x = 24,168,854,046.96/132,901.20 - Step 6: Final answer
x = 181,855.80
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1.5x scale
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.