Finding the Fourth Proportional to 121,987.71, 168,343.88 and 68,277.69
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Solution
The fourth proportional to 121,987.71, 168,343.88 and 68,277.69 is: 94,223.68
Step by Step Solution
- Step 1: Write the proportion equation
121,987.71 : 168,343.88 = 68,277.69 : x - Step 2: Convert to fraction form
121,987.71/168,343.88 = 68,277.69/x - Step 3: Cross multiply
121,987.71x = 168,343.88 × 68,277.69 - Step 4: Simplify right side
121,987.71x = 11,494,130,910.65 - Step 5: Solve for x
x = 11,494,130,910.65/121,987.71 - Step 6: Final answer
x = 94,223.68
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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.