Finding the Fourth Proportional to 154,098.99, 212,655.97 and 86,115.94
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Solution
The fourth proportional to 154,098.99, 212,655.97 and 86,115.94 is: 118,839.64
Step by Step Solution
- Step 1: Write the proportion equation
154,098.99 : 212,655.97 = 86,115.94 : x - Step 2: Convert to fraction form
154,098.99/212,655.97 = 86,115.94/x - Step 3: Cross multiply
154,098.99x = 212,655.97 × 86,115.94 - Step 4: Simplify right side
154,098.99x = 18,313,068,753.16 - Step 5: Solve for x
x = 18,313,068,753.16/154,098.99 - Step 6: Final answer
x = 118,839.64
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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.