Finding the Fourth Proportional to 141,772.20, 195,645.52 and 78,109.99
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Solution
The fourth proportional to 141,772.20, 195,645.52 and 78,109.99 is: 107,791.73
Step by Step Solution
- Step 1: Write the proportion equation
141,772.20 : 195,645.52 = 78,109.99 : x - Step 2: Convert to fraction form
141,772.20/195,645.52 = 78,109.99/x - Step 3: Cross multiply
141,772.20x = 195,645.52 × 78,109.99 - Step 4: Simplify right side
141,772.20x = 15,281,869,952.94 - Step 5: Solve for x
x = 15,281,869,952.94/141,772.20 - Step 6: Final answer
x = 107,791.73
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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.