Finding the Fourth Proportional to 98,687.64, 136,180.14 and 55,670.28
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Solution
The fourth proportional to 98,687.64, 136,180.14 and 55,670.28 is: 76,820.02
Step by Step Solution
- Step 1: Write the proportion equation
98,687.64 : 136,180.14 = 55,670.28 : x - Step 2: Convert to fraction form
98,687.64/136,180.14 = 55,670.28/x - Step 3: Cross multiply
98,687.64x = 136,180.14 × 55,670.28 - Step 4: Simplify right side
98,687.64x = 7,581,186,524.24 - Step 5: Solve for x
x = 7,581,186,524.24/98,687.64 - Step 6: Final answer
x = 76,820.02
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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.