Finding the Fourth Proportional to 175,431.96, 242,206.80 and 121,698.18
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Solution
The fourth proportional to 175,431.96, 242,206.80 and 121,698.18 is: 168,020.28
Step by Step Solution
- Step 1: Write the proportion equation
175,431.96 : 242,206.80 = 121,698.18 : x - Step 2: Convert to fraction form
175,431.96/242,206.80 = 121,698.18/x - Step 3: Cross multiply
175,431.96x = 242,206.80 × 121,698.18 - Step 4: Simplify right side
175,431.96x = 29,476,126,743.62 - Step 5: Solve for x
x = 29,476,126,743.62/175,431.96 - Step 6: Final answer
x = 168,020.28
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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.