Finding the Fourth Proportional to 193,478.09, 266,985.13 and 108,578.75
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Solution
The fourth proportional to 193,478.09, 266,985.13 and 108,578.75 is: 149,830.46
Step by Step Solution
- Step 1: Write the proportion equation
193,478.09 : 266,985.13 = 108,578.75 : x - Step 2: Convert to fraction form
193,478.09/266,985.13 = 108,578.75/x - Step 3: Cross multiply
193,478.09x = 266,985.13 × 108,578.75 - Step 4: Simplify right side
193,478.09x = 28,988,911,141.09 - Step 5: Solve for x
x = 28,988,911,141.09/193,478.09 - Step 6: Final answer
x = 149,830.46
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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.