Finding the Fourth Proportional to 128,129.84, 176,721.88 and 110,254.80
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Solution
The fourth proportional to 128,129.84, 176,721.88 and 110,254.80 is: 152,067.90
Step by Step Solution
- Step 1: Write the proportion equation
128,129.84 : 176,721.88 = 110,254.80 : x - Step 2: Convert to fraction form
128,129.84/176,721.88 = 110,254.80/x - Step 3: Cross multiply
128,129.84x = 176,721.88 × 110,254.80 - Step 4: Simplify right side
128,129.84x = 19,484,435,535.02 - Step 5: Solve for x
x = 19,484,435,535.02/128,129.84 - Step 6: Final answer
x = 152,067.90
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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.