Finding the Fourth Proportional to 172,070.66, 257,980.17 and 115,770.80
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Solution
The fourth proportional to 172,070.66, 257,980.17 and 115,770.80 is: 173,571.55
Step by Step Solution
- Step 1: Write the proportion equation
172,070.66 : 257,980.17 = 115,770.80 : x - Step 2: Convert to fraction form
172,070.66/257,980.17 = 115,770.80/x - Step 3: Cross multiply
172,070.66x = 257,980.17 × 115,770.80 - Step 4: Simplify right side
172,070.66x = 29,866,571,744.13 - Step 5: Solve for x
x = 29,866,571,744.13/172,070.66 - Step 6: Final answer
x = 173,571.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.