Finding the Fourth Proportional to 130,419.63, 195,497.10 and 74,143.49
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Solution
The fourth proportional to 130,419.63, 195,497.10 and 74,143.49 is: 111,139.99
Step by Step Solution
- Step 1: Write the proportion equation
130,419.63 : 195,497.10 = 74,143.49 : x - Step 2: Convert to fraction form
130,419.63/195,497.10 = 74,143.49/x - Step 3: Cross multiply
130,419.63x = 195,497.10 × 74,143.49 - Step 4: Simplify right side
130,419.63x = 14,494,836,301.39 - Step 5: Solve for x
x = 14,494,836,301.39/130,419.63 - Step 6: Final answer
x = 111,139.99
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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.