Finding the Fourth Proportional to 169,939.80, 254,909.70 and 91,207.80
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Solution
The fourth proportional to 169,939.80, 254,909.70 and 91,207.80 is: 136,811.70
Step by Step Solution
- Step 1: Write the proportion equation
169,939.80 : 254,909.70 = 91,207.80 : x - Step 2: Convert to fraction form
169,939.80/254,909.70 = 91,207.80/x - Step 3: Cross multiply
169,939.80x = 254,909.70 × 91,207.80 - Step 4: Simplify right side
169,939.80x = 23,249,752,935.66 - Step 5: Solve for x
x = 23,249,752,935.66/169,939.80 - Step 6: Final answer
x = 136,811.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.