Finding the Fourth Proportional to 147,770.11, 203,930.63 and 84,128.41
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Solution
The fourth proportional to 147,770.11, 203,930.63 and 84,128.41 is: 116,101.69
Step by Step Solution
- Step 1: Write the proportion equation
147,770.11 : 203,930.63 = 84,128.41 : x - Step 2: Convert to fraction form
147,770.11/203,930.63 = 84,128.41/x - Step 3: Cross multiply
147,770.11x = 203,930.63 × 84,128.41 - Step 4: Simplify right side
147,770.11x = 17,156,359,652.20 - Step 5: Solve for x
x = 17,156,359,652.20/147,770.11 - Step 6: Final answer
x = 116,101.69
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1.5x scale
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.