Finding the Fourth Proportional to 205,271.40, 307,938.68 and 72,121.98
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Solution
The fourth proportional to 205,271.40, 307,938.68 and 72,121.98 is: 108,194.07
Step by Step Solution
- Step 1: Write the proportion equation
205,271.40 : 307,938.68 = 72,121.98 : x - Step 2: Convert to fraction form
205,271.40/307,938.68 = 72,121.98/x - Step 3: Cross multiply
205,271.40x = 307,938.68 × 72,121.98 - Step 4: Simplify right side
205,271.40x = 22,209,147,320.19 - Step 5: Solve for x
x = 22,209,147,320.19/205,271.40 - Step 6: Final answer
x = 108,194.07
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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.