Finding the Fourth Proportional to 210,070.80, 315,106.20 and 121,497.30
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Solution
The fourth proportional to 210,070.80, 315,106.20 and 121,497.30 is: 182,245.95
Step by Step Solution
- Step 1: Write the proportion equation
210,070.80 : 315,106.20 = 121,497.30 : x - Step 2: Convert to fraction form
210,070.80/315,106.20 = 121,497.30/x - Step 3: Cross multiply
210,070.80x = 315,106.20 × 121,497.30 - Step 4: Simplify right side
210,070.80x = 38,284,552,513.26 - Step 5: Solve for x
x = 38,284,552,513.26/210,070.80 - Step 6: Final answer
x = 182,245.95
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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.