Finding the Fourth Proportional to 99,215.39, 136,838.07 and 65,258.75
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Solution
The fourth proportional to 99,215.39, 136,838.07 and 65,258.75 is: 90,005.00
Step by Step Solution
- Step 1: Write the proportion equation
99,215.39 : 136,838.07 = 65,258.75 : x - Step 2: Convert to fraction form
99,215.39/136,838.07 = 65,258.75/x - Step 3: Cross multiply
99,215.39x = 136,838.07 × 65,258.75 - Step 4: Simplify right side
99,215.39x = 8,929,880,716.42 - Step 5: Solve for x
x = 8,929,880,716.42/99,215.39 - Step 6: Final answer
x = 90,005.00
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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.