Finding the Fourth Proportional to 121,918.08, 168,237.36 and 68,198.88
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Solution
The fourth proportional to 121,918.08, 168,237.36 and 68,198.88 is: 94,109.09
Step by Step Solution
- Step 1: Write the proportion equation
121,918.08 : 168,237.36 = 68,198.88 : x - Step 2: Convert to fraction form
121,918.08/168,237.36 = 68,198.88/x - Step 3: Cross multiply
121,918.08x = 168,237.36 × 68,198.88 - Step 4: Simplify right side
121,918.08x = 11,473,599,526.16 - Step 5: Solve for x
x = 11,473,599,526.16/121,918.08 - Step 6: Final answer
x = 94,109.09
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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.