Finding the Fourth Proportional to 153,348.99, 211,620.09 and 85,364.88
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Solution
The fourth proportional to 153,348.99, 211,620.09 and 85,364.88 is: 117,802.69
Step by Step Solution
- Step 1: Write the proportion equation
153,348.99 : 211,620.09 = 85,364.88 : x - Step 2: Convert to fraction form
153,348.99/211,620.09 = 85,364.88/x - Step 3: Cross multiply
153,348.99x = 211,620.09 × 85,364.88 - Step 4: Simplify right side
153,348.99x = 18,064,923,588.44 - Step 5: Solve for x
x = 18,064,923,588.44/153,348.99 - Step 6: Final answer
x = 117,802.69
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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.