Finding the Fourth Proportional to 145,239.13, 217,880.84 and 74,122.93
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Solution
The fourth proportional to 145,239.13, 217,880.84 and 74,122.93 is: 111,195.70
Step by Step Solution
- Step 1: Write the proportion equation
145,239.13 : 217,880.84 = 74,122.93 : x - Step 2: Convert to fraction form
145,239.13/217,880.84 = 74,122.93/x - Step 3: Cross multiply
145,239.13x = 217,880.84 × 74,122.93 - Step 4: Simplify right side
145,239.13x = 16,149,966,251.66 - Step 5: Solve for x
x = 16,149,966,251.66/145,239.13 - Step 6: Final answer
x = 111,195.70
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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.