Finding the Fourth Proportional to 201,895.84, 278,612.76 and 117,020.80
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Solution
The fourth proportional to 201,895.84, 278,612.76 and 117,020.80 is: 161,486.68
Step by Step Solution
- Step 1: Write the proportion equation
201,895.84 : 278,612.76 = 117,020.80 : x - Step 2: Convert to fraction form
201,895.84/278,612.76 = 117,020.80/x - Step 3: Cross multiply
201,895.84x = 278,612.76 × 117,020.80 - Step 4: Simplify right side
201,895.84x = 32,603,488,065.41 - Step 5: Solve for x
x = 32,603,488,065.41/201,895.84 - Step 6: Final answer
x = 161,486.68
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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.