Finding the Fourth Proportional to 98,690.36, 136,187.48 and 55,668.62
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Solution
The fourth proportional to 98,690.36, 136,187.48 and 55,668.62 is: 76,819.75
Step by Step Solution
- Step 1: Write the proportion equation
98,690.36 : 136,187.48 = 55,668.62 : x - Step 2: Convert to fraction form
98,690.36/136,187.48 = 55,668.62/x - Step 3: Cross multiply
98,690.36x = 136,187.48 × 55,668.62 - Step 4: Simplify right side
98,690.36x = 7,581,368,113.60 - Step 5: Solve for x
x = 7,581,368,113.60/98,690.36 - Step 6: Final answer
x = 76,819.75
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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.