Finding the Fourth Proportional to 145,838.63, 201,257.44 and 78,770.63
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Solution
The fourth proportional to 145,838.63, 201,257.44 and 78,770.63 is: 108,703.54
Step by Step Solution
- Step 1: Write the proportion equation
145,838.63 : 201,257.44 = 78,770.63 : x - Step 2: Convert to fraction form
145,838.63/201,257.44 = 78,770.63/x - Step 3: Cross multiply
145,838.63x = 201,257.44 × 78,770.63 - Step 4: Simplify right side
145,838.63x = 15,853,175,340.99 - Step 5: Solve for x
x = 15,853,175,340.99/145,838.63 - Step 6: Final answer
x = 108,703.54
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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.