Finding the Fourth Proportional to 129,869.67, 179,249.98 and 76,171.99
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Solution
The fourth proportional to 129,869.67, 179,249.98 and 76,171.99 is: 105,134.84
Step by Step Solution
- Step 1: Write the proportion equation
129,869.67 : 179,249.98 = 76,171.99 : x - Step 2: Convert to fraction form
129,869.67/179,249.98 = 76,171.99/x - Step 3: Cross multiply
129,869.67x = 179,249.98 × 76,171.99 - Step 4: Simplify right side
129,869.67x = 13,653,827,426.37 - Step 5: Solve for x
x = 13,653,827,426.37/129,869.67 - Step 6: Final answer
x = 105,134.84
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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.