Finding the Fourth Proportional to 128,049.24, 176,707.98 and 71,459.40
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Solution
The fourth proportional to 128,049.24, 176,707.98 and 71,459.40 is: 98,613.99
Step by Step Solution
- Step 1: Write the proportion equation
128,049.24 : 176,707.98 = 71,459.40 : x - Step 2: Convert to fraction form
128,049.24/176,707.98 = 71,459.40/x - Step 3: Cross multiply
128,049.24x = 176,707.98 × 71,459.40 - Step 4: Simplify right side
128,049.24x = 12,627,446,226.01 - Step 5: Solve for x
x = 12,627,446,226.01/128,049.24 - Step 6: Final answer
x = 98,613.99
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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.