Finding the Fourth Proportional to 121,897.62, 168,209.58 and 68,172.26
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Solution
The fourth proportional to 121,897.62, 168,209.58 and 68,172.26 is: 94,072.60
Step by Step Solution
- Step 1: Write the proportion equation
121,897.62 : 168,209.58 = 68,172.26 : x - Step 2: Convert to fraction form
121,897.62/168,209.58 = 68,172.26/x - Step 3: Cross multiply
121,897.62x = 168,209.58 × 68,172.26 - Step 4: Simplify right side
121,897.62x = 11,467,226,381.20 - Step 5: Solve for x
x = 11,467,226,381.20/121,897.62 - Step 6: Final answer
x = 94,072.60
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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.