Finding the Fourth Proportional to 128,029.35, 176,654.12 and 73,571.00
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Solution
The fourth proportional to 128,029.35, 176,654.12 and 73,571.00 is: 101,512.82
Step by Step Solution
- Step 1: Write the proportion equation
128,029.35 : 176,654.12 = 73,571.00 : x - Step 2: Convert to fraction form
128,029.35/176,654.12 = 73,571.00/x - Step 3: Cross multiply
128,029.35x = 176,654.12 × 73,571.00 - Step 4: Simplify right side
128,029.35x = 12,996,620,336.30 - Step 5: Solve for x
x = 12,996,620,336.30/128,029.35 - Step 6: Final answer
x = 101,512.82
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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.