Finding the Fourth Proportional to 145,028.10, 217,331.91 and 102,990.54
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Solution
The fourth proportional to 145,028.10, 217,331.91 and 102,990.54 is: 154,336.51
Step by Step Solution
- Step 1: Write the proportion equation
145,028.10 : 217,331.91 = 102,990.54 : x - Step 2: Convert to fraction form
145,028.10/217,331.91 = 102,990.54/x - Step 3: Cross multiply
145,028.10x = 217,331.91 × 102,990.54 - Step 4: Simplify right side
145,028.10x = 22,383,130,770.13 - Step 5: Solve for x
x = 22,383,130,770.13/145,028.10 - Step 6: Final answer
x = 154,336.51
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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.