Finding the Fourth Proportional to 121,089.28, 167,013.84 and 83,375.68
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Solution
The fourth proportional to 121,089.28, 167,013.84 and 83,375.68 is: 114,996.91
Step by Step Solution
- Step 1: Write the proportion equation
121,089.28 : 167,013.84 = 83,375.68 : x - Step 2: Convert to fraction form
121,089.28/167,013.84 = 83,375.68/x - Step 3: Cross multiply
121,089.28x = 167,013.84 × 83,375.68 - Step 4: Simplify right side
121,089.28x = 13,924,892,479.41 - Step 5: Solve for x
x = 13,924,892,479.41/121,089.28 - Step 6: Final answer
x = 114,996.91
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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.