Finding the Fourth Proportional to 154,835.08, 213,672.26 and 87,767.08
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Solution
The fourth proportional to 154,835.08, 213,672.26 and 87,767.08 is: 121,118.49
Step by Step Solution
- Step 1: Write the proportion equation
154,835.08 : 213,672.26 = 87,767.08 : x - Step 2: Convert to fraction form
154,835.08/213,672.26 = 87,767.08/x - Step 3: Cross multiply
154,835.08x = 213,672.26 × 87,767.08 - Step 4: Simplify right side
154,835.08x = 18,753,390,337.20 - Step 5: Solve for x
x = 18,753,390,337.20/154,835.08 - Step 6: Final answer
x = 121,118.49
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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.