Finding the Fourth Proportional to 153,479.19, 211,800.69 and 85,496.97
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Solution
The fourth proportional to 153,479.19, 211,800.69 and 85,496.97 is: 117,985.49
Step by Step Solution
- Step 1: Write the proportion equation
153,479.19 : 211,800.69 = 85,496.97 : x - Step 2: Convert to fraction form
153,479.19/211,800.69 = 85,496.97/x - Step 3: Cross multiply
153,479.19x = 211,800.69 × 85,496.97 - Step 4: Simplify right side
153,479.19x = 18,108,317,238.91 - Step 5: Solve for x
x = 18,108,317,238.91/153,479.19 - Step 6: Final answer
x = 117,985.49
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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.