Finding the Fourth Proportional to 128,258.24, 192,456.12 and 53,430.08
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Solution
The fourth proportional to 128,258.24, 192,456.12 and 53,430.08 is: 80,173.76
Step by Step Solution
- Step 1: Write the proportion equation
128,258.24 : 192,456.12 = 53,430.08 : x - Step 2: Convert to fraction form
128,258.24/192,456.12 = 53,430.08/x - Step 3: Cross multiply
128,258.24x = 192,456.12 × 53,430.08 - Step 4: Simplify right side
128,258.24x = 10,282,945,888.09 - Step 5: Solve for x
x = 10,282,945,888.09/128,258.24 - Step 6: Final answer
x = 80,173.76
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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.