Finding the Fourth Proportional to 128,245.44, 176,987.87 and 70,883.54
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Solution
The fourth proportional to 128,245.44, 176,987.87 and 70,883.54 is: 97,824.34
Step by Step Solution
- Step 1: Write the proportion equation
128,245.44 : 176,987.87 = 70,883.54 : x - Step 2: Convert to fraction form
128,245.44/176,987.87 = 70,883.54/x - Step 3: Cross multiply
128,245.44x = 176,987.87 × 70,883.54 - Step 4: Simplify right side
128,245.44x = 12,545,525,523.30 - Step 5: Solve for x
x = 12,545,525,523.30/128,245.44 - Step 6: Final answer
x = 97,824.34
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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.