Finding the Fourth Proportional to 121,308.48, 181,995.66 and 68,754.88
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Solution
The fourth proportional to 121,308.48, 181,995.66 and 68,754.88 is: 103,150.99
Step by Step Solution
- Step 1: Write the proportion equation
121,308.48 : 181,995.66 = 68,754.88 : x - Step 2: Convert to fraction form
121,308.48/181,995.66 = 68,754.88/x - Step 3: Cross multiply
121,308.48x = 181,995.66 × 68,754.88 - Step 4: Simplify right side
121,308.48x = 12,513,089,763.82 - Step 5: Solve for x
x = 12,513,089,763.82/121,308.48 - Step 6: Final answer
x = 103,150.99
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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.