Finding the Fourth Proportional to 207,689.15, 286,616.93 and 115,810.55
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Solution
The fourth proportional to 207,689.15, 286,616.93 and 115,810.55 is: 159,821.84
Step by Step Solution
- Step 1: Write the proportion equation
207,689.15 : 286,616.93 = 115,810.55 : x - Step 2: Convert to fraction form
207,689.15/286,616.93 = 115,810.55/x - Step 3: Cross multiply
207,689.15x = 286,616.93 × 115,810.55 - Step 4: Simplify right side
207,689.15x = 33,193,262,290.47 - Step 5: Solve for x
x = 33,193,262,290.47/207,689.15 - Step 6: Final answer
x = 159,821.84
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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.