Finding the Fourth Proportional to 121,221.14, 181,893.99 and 53,799.38
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Solution
The fourth proportional to 121,221.14, 181,893.99 and 53,799.38 is: 80,726.71
Step by Step Solution
- Step 1: Write the proportion equation
121,221.14 : 181,893.99 = 53,799.38 : x - Step 2: Convert to fraction form
121,221.14/181,893.99 = 53,799.38/x - Step 3: Cross multiply
121,221.14x = 181,893.99 × 53,799.38 - Step 4: Simplify right side
121,221.14x = 9,785,782,978.26 - Step 5: Solve for x
x = 9,785,782,978.26/121,221.14 - Step 6: Final answer
x = 80,726.71
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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.