Finding the Fourth Proportional to 128,249.93, 176,981.81 and 70,104.08
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Solution
The fourth proportional to 128,249.93, 176,981.81 and 70,104.08 is: 96,741.94
Step by Step Solution
- Step 1: Write the proportion equation
128,249.93 : 176,981.81 = 70,104.08 : x - Step 2: Convert to fraction form
128,249.93/176,981.81 = 70,104.08/x - Step 3: Cross multiply
128,249.93x = 176,981.81 × 70,104.08 - Step 4: Simplify right side
128,249.93x = 12,407,146,349.07 - Step 5: Solve for x
x = 12,407,146,349.07/128,249.93 - Step 6: Final answer
x = 96,741.94
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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.