Finding the Fourth Proportional to 128,935.84, 177,885.84 and 84,249.76
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Solution
The fourth proportional to 128,935.84, 177,885.84 and 84,249.76 is: 116,234.86
Step by Step Solution
- Step 1: Write the proportion equation
128,935.84 : 177,885.84 = 84,249.76 : x - Step 2: Convert to fraction form
128,935.84/177,885.84 = 84,249.76/x - Step 3: Cross multiply
128,935.84x = 177,885.84 × 84,249.76 - Step 4: Simplify right side
128,935.84x = 14,986,839,327.40 - Step 5: Solve for x
x = 14,986,839,327.40/128,935.84 - Step 6: Final answer
x = 116,234.86
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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.