Finding the Fourth Proportional to 145,747.36, 218,866.80 and 138,265.12
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Solution
The fourth proportional to 145,747.36, 218,866.80 and 138,265.12 is: 207,630.82
Step by Step Solution
- Step 1: Write the proportion equation
145,747.36 : 218,866.80 = 138,265.12 : x - Step 2: Convert to fraction form
145,747.36/218,866.80 = 138,265.12/x - Step 3: Cross multiply
145,747.36x = 218,866.80 × 138,265.12 - Step 4: Simplify right side
145,747.36x = 30,261,644,366.02 - Step 5: Solve for x
x = 30,261,644,366.02/145,747.36 - Step 6: Final answer
x = 207,630.82
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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.