Finding the Fourth Proportional to 121,214.20, 181,907.70 and 68,567.80
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Solution
The fourth proportional to 121,214.20, 181,907.70 and 68,567.80 is: 102,900.57
Step by Step Solution
- Step 1: Write the proportion equation
121,214.20 : 181,907.70 = 68,567.80 : x - Step 2: Convert to fraction form
121,214.20/181,907.70 = 68,567.80/x - Step 3: Cross multiply
121,214.20x = 181,907.70 × 68,567.80 - Step 4: Simplify right side
121,214.20x = 12,473,010,792.06 - Step 5: Solve for x
x = 12,473,010,792.06/121,214.20 - Step 6: Final answer
x = 102,900.57
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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.