Finding the Fourth Proportional to 121,315.64, 181,967.99 and 46,471.05
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Solution
The fourth proportional to 121,315.64, 181,967.99 and 46,471.05 is: 69,704.48
Step by Step Solution
- Step 1: Write the proportion equation
121,315.64 : 181,967.99 = 46,471.05 : x - Step 2: Convert to fraction form
121,315.64/181,967.99 = 46,471.05/x - Step 3: Cross multiply
121,315.64x = 181,967.99 × 46,471.05 - Step 4: Simplify right side
121,315.64x = 8,456,243,329.33 - Step 5: Solve for x
x = 8,456,243,329.33/121,315.64 - Step 6: Final answer
x = 69,704.48
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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.