Finding the Fourth Proportional to 128,528.24, 177,335.34 and 74,067.08
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Solution
The fourth proportional to 128,528.24, 177,335.34 and 74,067.08 is: 102,193.19
Step by Step Solution
- Step 1: Write the proportion equation
128,528.24 : 177,335.34 = 74,067.08 : x - Step 2: Convert to fraction form
128,528.24/177,335.34 = 74,067.08/x - Step 3: Cross multiply
128,528.24x = 177,335.34 × 74,067.08 - Step 4: Simplify right side
128,528.24x = 13,134,710,814.61 - Step 5: Solve for x
x = 13,134,710,814.61/128,528.24 - Step 6: Final answer
x = 102,193.19
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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.