Finding the Fourth Proportional to 102,313.14, 153,265.59 and 81,288.78
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Solution
The fourth proportional to 102,313.14, 153,265.59 and 81,288.78 is: 121,770.99
Step by Step Solution
- Step 1: Write the proportion equation
102,313.14 : 153,265.59 = 81,288.78 : x - Step 2: Convert to fraction form
102,313.14/153,265.59 = 81,288.78/x - Step 3: Cross multiply
102,313.14x = 153,265.59 × 81,288.78 - Step 4: Simplify right side
102,313.14x = 12,458,772,827.08 - Step 5: Solve for x
x = 12,458,772,827.08/102,313.14 - Step 6: Final answer
x = 121,770.99
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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.