Finding the Fourth Proportional to 147,371.40, 203,211.36 and 99,541.68
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Solution
The fourth proportional to 147,371.40, 203,211.36 and 99,541.68 is: 137,258.66
Step by Step Solution
- Step 1: Write the proportion equation
147,371.40 : 203,211.36 = 99,541.68 : x - Step 2: Convert to fraction form
147,371.40/203,211.36 = 99,541.68/x - Step 3: Cross multiply
147,371.40x = 203,211.36 × 99,541.68 - Step 4: Simplify right side
147,371.40x = 20,228,000,169.48 - Step 5: Solve for x
x = 20,228,000,169.48/147,371.40 - Step 6: Final answer
x = 137,258.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.