Finding the Fourth Proportional to 128,207.06, 176,889.71 and 73,756.38
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Solution
The fourth proportional to 128,207.06, 176,889.71 and 73,756.38 is: 101,763.08
Step by Step Solution
- Step 1: Write the proportion equation
128,207.06 : 176,889.71 = 73,756.38 : x - Step 2: Convert to fraction form
128,207.06/176,889.71 = 73,756.38/x - Step 3: Cross multiply
128,207.06x = 176,889.71 × 73,756.38 - Step 4: Simplify right side
128,207.06x = 13,046,744,853.24 - Step 5: Solve for x
x = 13,046,744,853.24/128,207.06 - Step 6: Final answer
x = 101,763.08
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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.