Finding the Fourth Proportional to 129,259,678.74, 193,875,147.37 and 46,258,081.57
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Solution
The fourth proportional to 129,259,678.74, 193,875,147.37 and 46,258,081.57 is: 69,381,979.51
Step by Step Solution
- Step 1: Write the proportion equation
129,259,678.74 : 193,875,147.37 = 46,258,081.57 : x - Step 2: Convert to fraction form
129,259,678.74/193,875,147.37 = 46,258,081.57/x - Step 3: Cross multiply
129,259,678.74x = 193,875,147.37 × 46,258,081.57 - Step 4: Simplify right side
129,259,678.74x = 8,968,292,381,437,231 - Step 5: Solve for x
x = 8,968,292,381,437,231/129,259,678.74 - Step 6: Final answer
x = 69,381,979.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.