Finding the Fourth Proportional to 128,866.48, 193,253.36 and 44,603.75
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Solution
The fourth proportional to 128,866.48, 193,253.36 and 44,603.75 is: 66,889.58
Step by Step Solution
- Step 1: Write the proportion equation
128,866.48 : 193,253.36 = 44,603.75 : x - Step 2: Convert to fraction form
128,866.48/193,253.36 = 44,603.75/x - Step 3: Cross multiply
128,866.48x = 193,253.36 × 44,603.75 - Step 4: Simplify right side
128,866.48x = 8,619,824,556.10 - Step 5: Solve for x
x = 8,619,824,556.10/128,866.48 - Step 6: Final answer
x = 66,889.58
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1.5x scale
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.