Finding the Fourth Proportional to 143,556.98, 198,106.66 and 79,894.79
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Solution
The fourth proportional to 143,556.98, 198,106.66 and 79,894.79 is: 110,253.72
Step by Step Solution
- Step 1: Write the proportion equation
143,556.98 : 198,106.66 = 79,894.79 : x - Step 2: Convert to fraction form
143,556.98/198,106.66 = 79,894.79/x - Step 3: Cross multiply
143,556.98x = 198,106.66 × 79,894.79 - Step 4: Simplify right side
143,556.98x = 15,827,689,850.54 - Step 5: Solve for x
x = 15,827,689,850.54/143,556.98 - Step 6: Final answer
x = 110,253.72
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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.