Finding the Fourth Proportional to 128,052.18, 176,722.02 and 71,472.06
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Solution
The fourth proportional to 128,052.18, 176,722.02 and 71,472.06 is: 98,637.03
Step by Step Solution
- Step 1: Write the proportion equation
128,052.18 : 176,722.02 = 71,472.06 : x - Step 2: Convert to fraction form
128,052.18/176,722.02 = 71,472.06/x - Step 3: Cross multiply
128,052.18x = 176,722.02 × 71,472.06 - Step 4: Simplify right side
128,052.18x = 12,630,686,816.76 - Step 5: Solve for x
x = 12,630,686,816.76/128,052.18 - Step 6: Final answer
x = 98,637.03
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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.