Finding the Fourth Proportional to 151,513.18, 209,088.60 and 91,118.41
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Solution
The fourth proportional to 151,513.18, 209,088.60 and 91,118.41 is: 125,743.65
Step by Step Solution
- Step 1: Write the proportion equation
151,513.18 : 209,088.60 = 91,118.41 : x - Step 2: Convert to fraction form
151,513.18/209,088.60 = 91,118.41/x - Step 3: Cross multiply
151,513.18x = 209,088.60 × 91,118.41 - Step 4: Simplify right side
151,513.18x = 19,051,820,781.13 - Step 5: Solve for x
x = 19,051,820,781.13/151,513.18 - Step 6: Final answer
x = 125,743.65
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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.