Finding the Fourth Proportional to 153,117.19, 211,311.29 and 85,149.37
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Solution
The fourth proportional to 153,117.19, 211,311.29 and 85,149.37 is: 117,511.45
Step by Step Solution
- Step 1: Write the proportion equation
153,117.19 : 211,311.29 = 85,149.37 : x - Step 2: Convert to fraction form
153,117.19/211,311.29 = 85,149.37/x - Step 3: Cross multiply
153,117.19x = 211,311.29 × 85,149.37 - Step 4: Simplify right side
153,117.19x = 17,993,023,217.39 - Step 5: Solve for x
x = 17,993,023,217.39/153,117.19 - Step 6: Final answer
x = 117,511.45
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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.