Finding the Fourth Proportional to 128,878.24, 193,220.16 and 84,516.16
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Solution
The fourth proportional to 128,878.24, 193,220.16 and 84,516.16 is: 126,710.50
Step by Step Solution
- Step 1: Write the proportion equation
128,878.24 : 193,220.16 = 84,516.16 : x - Step 2: Convert to fraction form
128,878.24/193,220.16 = 84,516.16/x - Step 3: Cross multiply
128,878.24x = 193,220.16 × 84,516.16 - Step 4: Simplify right side
128,878.24x = 16,330,225,957.79 - Step 5: Solve for x
x = 16,330,225,957.79/128,878.24 - Step 6: Final answer
x = 126,710.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.