Finding the Fourth Proportional to 155,030.39, 213,944.18 and 87,062.07
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Solution
The fourth proportional to 155,030.39, 213,944.18 and 87,062.07 is: 120,146.92
Step by Step Solution
- Step 1: Write the proportion equation
155,030.39 : 213,944.18 = 87,062.07 : x - Step 2: Convert to fraction form
155,030.39/213,944.18 = 87,062.07/x - Step 3: Cross multiply
155,030.39x = 213,944.18 × 87,062.07 - Step 4: Simplify right side
155,030.39x = 18,626,422,739.94 - Step 5: Solve for x
x = 18,626,422,739.94/155,030.39 - Step 6: Final answer
x = 120,146.92
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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.