Finding the Fourth Proportional to 98,190.12, 135,497.54 and 55,743.08
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Solution
The fourth proportional to 98,190.12, 135,497.54 and 55,743.08 is: 76,922.71
Step by Step Solution
- Step 1: Write the proportion equation
98,190.12 : 135,497.54 = 55,743.08 : x - Step 2: Convert to fraction form
98,190.12/135,497.54 = 55,743.08/x - Step 3: Cross multiply
98,190.12x = 135,497.54 × 55,743.08 - Step 4: Simplify right side
98,190.12x = 7,553,050,212.02 - Step 5: Solve for x
x = 7,553,050,212.02/98,190.12 - Step 6: Final answer
x = 76,922.71
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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.