Finding the Fourth Proportional to 121,281.08, 181,699.93 and 87,918.39
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Solution
The fourth proportional to 121,281.08, 181,699.93 and 87,918.39 is: 131,716.88
Step by Step Solution
- Step 1: Write the proportion equation
121,281.08 : 181,699.93 = 87,918.39 : x - Step 2: Convert to fraction form
121,281.08/181,699.93 = 87,918.39/x - Step 3: Cross multiply
121,281.08x = 181,699.93 × 87,918.39 - Step 4: Simplify right side
121,281.08x = 15,974,765,088.92 - Step 5: Solve for x
x = 15,974,765,088.92/121,281.08 - Step 6: Final answer
x = 131,716.88
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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.