Finding the Fourth Proportional to 153,110.94, 211,302.64 and 85,143.09
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Solution
The fourth proportional to 153,110.94, 211,302.64 and 85,143.09 is: 117,502.77
Step by Step Solution
- Step 1: Write the proportion equation
153,110.94 : 211,302.64 = 85,143.09 : x - Step 2: Convert to fraction form
153,110.94/211,302.64 = 85,143.09/x - Step 3: Cross multiply
153,110.94x = 211,302.64 × 85,143.09 - Step 4: Simplify right side
153,110.94x = 17,990,959,694.76 - Step 5: Solve for x
x = 17,990,959,694.76/153,110.94 - Step 6: Final answer
x = 117,502.77
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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.