Finding the Fourth Proportional to 128,265.14, 192,422.91 and 39,503.54
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Solution
The fourth proportional to 128,265.14, 192,422.91 and 39,503.54 is: 59,263.07
Step by Step Solution
- Step 1: Write the proportion equation
128,265.14 : 192,422.91 = 39,503.54 : x - Step 2: Convert to fraction form
128,265.14/192,422.91 = 39,503.54/x - Step 3: Cross multiply
128,265.14x = 192,422.91 × 39,503.54 - Step 4: Simplify right side
128,265.14x = 7,601,386,122.10 - Step 5: Solve for x
x = 7,601,386,122.10/128,265.14 - Step 6: Final answer
x = 59,263.07
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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.