Finding the Fourth Proportional to 154,486.13, 213,194.10 and 87,418.13
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Solution
The fourth proportional to 154,486.13, 213,194.10 and 87,418.13 is: 120,638.85
Step by Step Solution
- Step 1: Write the proportion equation
154,486.13 : 213,194.10 = 87,418.13 : x - Step 2: Convert to fraction form
154,486.13/213,194.10 = 87,418.13/x - Step 3: Cross multiply
154,486.13x = 213,194.10 × 87,418.13 - Step 4: Simplify right side
154,486.13x = 18,637,028,483.06 - Step 5: Solve for x
x = 18,637,028,483.06/154,486.13 - Step 6: Final answer
x = 120,638.85
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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.