Finding the Fourth Proportional to 121,718.65, 167,968.64 and 68,004.07
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Solution
The fourth proportional to 121,718.65, 167,968.64 and 68,004.07 is: 93,843.88
Step by Step Solution
- Step 1: Write the proportion equation
121,718.65 : 167,968.64 = 68,004.07 : x - Step 2: Convert to fraction form
121,718.65/167,968.64 = 68,004.07/x - Step 3: Cross multiply
121,718.65x = 167,968.64 × 68,004.07 - Step 4: Simplify right side
121,718.65x = 11,422,549,972.50 - Step 5: Solve for x
x = 11,422,549,972.50/121,718.65 - Step 6: Final answer
x = 93,843.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.