Finding the Fourth Proportional to 153,671.85, 212,069.78 and 84,769.23
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Solution
The fourth proportional to 153,671.85, 212,069.78 and 84,769.23 is: 116,982.99
Step by Step Solution
- Step 1: Write the proportion equation
153,671.85 : 212,069.78 = 84,769.23 : x - Step 2: Convert to fraction form
153,671.85/212,069.78 = 84,769.23/x - Step 3: Cross multiply
153,671.85x = 212,069.78 × 84,769.23 - Step 4: Simplify right side
153,671.85x = 17,976,991,956.87 - Step 5: Solve for x
x = 17,976,991,956.87/153,671.85 - Step 6: Final answer
x = 116,982.99
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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.