Finding the Fourth Proportional to 98,738.15, 136,258.08 and 53,415.99
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Solution
The fourth proportional to 98,738.15, 136,258.08 and 53,415.99 is: 73,713.77
Step by Step Solution
- Step 1: Write the proportion equation
98,738.15 : 136,258.08 = 53,415.99 : x - Step 2: Convert to fraction form
98,738.15/136,258.08 = 53,415.99/x - Step 3: Cross multiply
98,738.15x = 136,258.08 × 53,415.99 - Step 4: Simplify right side
98,738.15x = 7,278,360,549.36 - Step 5: Solve for x
x = 7,278,360,549.36/98,738.15 - Step 6: Final answer
x = 73,713.77
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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.